Ecosystems for Children All About Forest Ecosystems K- 4

Ecosystems for Children: All About Forest Ecosystems K- 4

The Following Curriculum comes from the Library Video w ebsite: Teacher Guides

https://www.docsj.com/doc/de5691972.html,/supplemental_content/guides.asp?mscssid=0BV J26504NL08H K7L2WWDMX9BSPA9R91 None of the materials w ere altered in content. They have simply been adjusted in font/layout for your convenience. More teacher guides are available at this link Wanda Albrecht- Librarian

Program Summary

Ecosystems are places where plants and animals interact with each other,

and with the non-living things around them. Water ecosystems are unique

because many of the plants and animals actually live underwater!

There are two kinds of water ecosystems: marine and freshwater ecosystems.

Though we have named the major oceans of the world, they are all

connected into one large world ocean. Millions of years ago, all life began in

the ocean, and much of our air came from microscopic plant plankton,

which still make oxygen today through the process of photosynthesis. Plant

and animal plankton are food for most of the animals that live in this environment. Small creatures eat plankton, larger creatures eat the smaller ones

and so on, until we get up to the top predators, like the sharks. Marine organisms abound in and around coral reefs, which are found in warm, shallow,

tropical ocean water. Some marine organisms live in icy cold arctic waters;

some live in open oceans; some live deep on the ocean floor, while others

live on coastlines. Each of the creatures that live in these marine ecosystems

is well-adapted to those special conditions and to the niche, or job, that they

fill in that habitat. Bays and gulfs are ecosystems where saltwater and freshwater

mix when large rivers spill into the ocean. These nutrient-rich waters

are optimal sites for many creatures to lay their eggs and raise their young,

before they are large and strong enough to swim out into the open ocean.

For that reason, these areas are called the “nurseries of ocean.”

There are two kinds of freshwater ecosystems. Flowing water ecosystems,

such as streams and rivers, usually begin high in mountains, where melting

ice and snow create tiny streams, which run downhill, combine and turn

into large rivers. Standing water ecosystems, such as ponds, lakes and wetlands,

do not flow at all. They usually begin as hollows in the ground, which

fill up from rainfall, melting ice and snow, or as parts of streams or rivers

that are closed-off. Flat wetlands may only be wet part of the year and dry

up at other times. Many different kinds of plants and animals live in or near

all kinds of standing water ecosystems. Migrating birds frequently search for

lakes and ponds as a resting place on their long spring or autumn journeys.

For this reason, lakes are described as magnets for wildlife.

Over the years, humans have been responsible for introducing pollution

into many water ecosystems. Oil spills and trash have been dumped into

oceans, and industrial wastes have been poured into rivers. Run-off from fertilizers

and pesticides from nearby farms, and even detergents and sewage

from homes affects marine and freshwater ecosystems.

Ecosystems for Children: All About Forest Ecosystems K- 4 Vocabulary

The following words are included for teacher reference or for use with students. They are listed in the order in which they appear in the video.

ecosystems — Places where living things interact with each other and

with nonliving components, such as soil and water.

freshwater ecosystems — Water ecosystems that contain fresh water,

which is not as salty as ocean or marine water.

standing water ecosystems — Bodies of water, such as ponds, lakes, swamps and bogs, in which the water is completely surrounded by land and does not flow.

flowing water ecosystems — Bodies of water, such as streams and rivers,

in which the water flows from high areas to low areas, usually ending up in the ocean.

marine ecosystems —Water ecosystems that have salty water and creatures who are adapted to living in salty water.

habitat —The area where a plant or animal lives.

niche —The job of a plant or animal, or its place within the habitat.

ocean —The hu ge salt water body that covers much of the Earth’s surface. plankton — Tiny plants and animals of the ocean that serve as a food source for ocean creatures and provide the Earth with oxygen. photosynthesis —The process by which a plant produces its food, using energy from sunlight, carbon dioxide from the air and water from the soil. food chain —The path that material and energy take as they move from

the sun and pass from organism to organism in an ecosystem.

coral reefs —A marine ecosystem located in warm tropical waters that is based on structures built by coral and contains abundant marine life. camouflage —A coloring adaptation that helps creatures to blend in with their surroundings so that they appear less obvious to their predators. predators —Animals that hunt and eat other animals, called their prey. migration —When animals change locations during certain times of the

year to seek a better food supply and find a safe place to raise a family.

gulf, bay — Mineral-rich ecosystems located where freshwater rivers

empty into salty ocean waters.

streams, rivers — Flowing freshwater ecosystems. As streams meet and combine, they form larger bodies of water, called rivers, which usually

empty into the ocean.

ponds, lakes — Standing freshwater ecosystems. Ponds are usually shallow and small; lakes can be very large and deep.

pollution — Harmful chemicals that human activities put into the air, land and water, like smog and oil spills.

wetland —An ecosystem that is covered by water for part of the year and

is somewhere between standing and flowing water, including swamps and bogs.

Pre-viewing Discussion

Before students generate their list of “Everything We Know About…” this topic, stimulate and focus their thinking by raising these questions so that their list will better reflect the key ideas in this show:

? What is a water ecosystem?

? What different types of water ecosystems are there?

? What types of plants and animals live in these ecosystems?

After the class has completed their “Everything We Know About…” list,

ask them what other questions they have that they hope will be

answered during this program. Have students listen closely to learn if everything on their class list is accurate and to hear if any of their own questions are answered.

Focus Questions

1. Why is the Earth sometimes called “the water planet”?

2. Name the different types of marine ecosystems. Where would we find each of them?

3. What types of plants and animals might we find on a coral reef that we might never find in a bay? Why?

4. What kind of fish can live in both marine and freshwater ecosystems? Why does that fish swim as much as 2,000 miles back to freshwater

after living most of its life in the ocean?

5. What are two types of freshwater ecosystems? Give examples of each type.

6. How do rivers usually start out? How different do they look by the

time they empty into the ocean?

7. Why are biologists working on ways to stop the spread of the zebra mussel? What caused the problem?

8. What different things can cause water pollution?

9. How are wetlands different from ponds and lakes? What is the largest wetland in the world?

10. Why are swamps considered to be good places for many different

types of creatures to live?

Follow-up Discussion

The most important part of this segment is to examine both the facts

and beliefs generated by the class in their “Everything We Know

About…” list. Research indicates that students will retain their previous misconceptions — in preference to the new information — until they actively recognize and correct their own errors. Because of this, it is important to lead students to the correct ideas while identifying and correcting any misconceptions from the class list. After reviewing the list,

encourage students to share the answers they got to the questions

raised, before viewing the program.

Raising a thought-provoking question is a good way to assess the overall

depth of student understanding. A couple of suggestions are listed

below:

? Compare animals that live in a land ecosystem with those living in a

water ecosystem. How are their adaptations for living in those ecosystems different?

? Where do you think it might be more difficult for a freshwater creature

to live and survive: in a mountain stream, in a big river, in a pond, or

near the ocean? Justify your answer.

Follow-up Activities

? Have students research different types of water ecosystems and the different types of animals that live there. Students should then draw a

picture of one type of water ecosystem that they have read about. The pictures could then be displayed on a bulletin board, while the teacher conducts a “guessing game,” holding up pictures of various animals and asking the class to guess where each animal might live.

? Conduct an ongoing investigation with students, monitoring the health

of a local stream or waterway. Identify any environmental problems associated with this particular water ecosystem, and what aquatic

species might be affected by these problems. Finally, develop a plan of action, such as a community stream clean-up project, to clean up pollution and improve the conditions.

? Have students set up and maintain a classroom tropical aquarium,

which would be a way for them to realize the special conditions

required by creatures in a water ecosystem. Students can also visit a

pet shop to interview a person who is knowledgeable about aquariums

and can help guide them in maintaining the life of their plants, fish,

snails and crayfish.

Suggested Internet Resources

Periodically, Internet Resources are updated on our Web site at

https://www.docsj.com/doc/de5691972.html,

? https://www.docsj.com/doc/de5691972.html,

This site from the Missouri Botanical Garden presents information on

the biomes and ecosystems of the world, including freshwater and

marine ecosystems, such as rivers, streams, ponds, wetlands and

oceans.

? https://www.docsj.com/doc/de5691972.html,/kids/water.htm

This Web page from the Environmental Protection Agency provides information about the water cycle and offers several downloadable

activity books about water ecosystems around the world. The site also

has descriptions of some of the plants and animals that call water their home.

超全的英语介词用法归纳总结

超全的英语介词用法归纳总结常用介词基本用法辨析 表示方位的介词：in, to, on 1. in 表示在某地范围之内。 Shanghai is/lies in the east of China. 上海在中国的东部。 2. to 表示在某地范围之外。 Japan is/lies to the east of China. 日本位于中国的东面。 3. on 表示与某地相邻或接壤。 Mongolia is/lies on the north of China. 蒙古国位于中国北边。 表示计量的介词：at, for, by 1. at 表示“以……速度”“以……价格”。 It flies at about 900 kilometers an hour. 它以每小时900公里的速度飞行。 I sold my car at a high price. 我以高价出售了我的汽车。 2. for 表示“用……交换，以……为代价”。 He sold his car for 500 dollars. 他以五百元把车卖了。 注意：at表示单价(price) ，for表示总钱数。

3. by 表示“以……计”，后跟度量单位。 They paid him by the month. 他们按月给他计酬。 Here eggs are sold by weight. 在这里鸡蛋是按重量卖的。 表示材料的介词：of, from, in 1. of 成品仍可看出原料。 This box is made of paper. 这个盒子是纸做的。 2. from 成品已看不出原料。 Wine is made from grapes. 葡萄酒是葡萄酿成的。 3. in 表示用某种材料或语言。 Please fill in the form in pencil first. 请先用铅笔填写这个表格。They talk in English. 他们用英语交谈。 表示工具或手段的介词：by, with, on 1. by 用某种方式，多用于交通。 I went there by bus. 我坐公共汽车去那儿。 2. with表示“用某种工具”。 He broke the window with a stone. 他用石头把玻璃砸坏了。注意：with表示用某种工具时，必须用冠词或物主代词。

of与for的用法以及区别

of与for的用法以及区别 for 表原因、目的 of 表从属关系 介词of的用法 （1）所有关系 this is a picture of a classroom （2）部分关系 a piece of paper a cup of tea a glass of water a bottle of milk what kind of football，American of soccer？ （3）描写关系 a man of thirty 三十岁的人 a man of shanghai 上海人 （4）承受动作 the exploitation of man by man．人对人的剥削。 （5）同位关系 It was a cold spring morning in the city of London in England． （6）关于，对于 What do you think of Chinese food？ 你觉得中国食品怎么样？ 介词 for 的用法小结 1. 表示“当作、作为”。如: I like some bread and milk for breakfast. 我喜欢把面包和牛奶作为早餐。What will we have for supper? 我们晚餐吃什么?

2. 表示理由或原因,意为“因为、由于”。如: Thank you for helping me with my English. 谢谢你帮我学习英语。 Thank you for your last letter. 谢谢你上次的来信。 Thank you for teaching us so well. 感谢你如此尽心地教我们。 3. 表示动作的对象或接受者,意为“给……”、“对…… (而言)”。如: Let me pick it up for you. 让我为你捡起来。 Watching TV too much is bad for your health. 看电视太多有害于你的健康。 4. 表示时间、距离,意为“计、达”。如: I usually do the running for an hour in the morning. 我早晨通常跑步一小时。We will stay there for two days. 我们将在那里逗留两天。 5. 表示去向、目的,意为“向、往、取、买”等。如: let’s go for a walk. 我们出去散步吧。 I came here for my schoolbag.我来这儿取书包。 I paid twenty yuan for the dictionary. 我花了20元买这本词典。 6. 表示所属关系或用途,意为“为、适于……的”。如: It’s time for school. 到上学的时间了。 Here is a letter for you. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如: Who are you waiting for? 你在等谁? For example, Mr Green is a kind teacher. 比如,格林先生是一位心地善良的老师。

高中英语45个介词的基本用法

——45个基本介词的用法 1、about 【原始含义】 a-b-out “A在B外面” 【引申含义】 [prep] （1）在…到处，在…各处here and there eg: We wandered about the town for an hour or so. He looked about the room. （2）在…附近next to a place eg. She lives about the office. （3）关于in connection with eg: a book about English study I don’t know what you are talking about. [adv] （1）大约close to eg: We left there about 10 o’clock. It costs about 500 dollars. （2）到处，各处 eg: The children were rushing about in the garden. （3）在附近 eg : There is no food about. 【常见搭配】 作介词时的搭配: 一.动词+(about+名词) （1）arrange (about sth) 安排关于某事（2）argue (about sth) 讨论某事 （3）ask (about sth) 询问关于某事（4）boast (about sb/sth) 吹嘘... （5）care (about sb/sth)关心…,对…感兴趣（6）chat(about sth) 谈论某事（7）complain(about sb/sth) 抱怨… （8）dream (about sb/sth) 梦见某人/某物（9）go (about sth) 着手做...；从事...

(完整版)介词for用法归纳

介词for用法归纳 用法1：(表目的)为了。如： They went out for a walk. 他们出去散步了。 What did you do that for? 你干吗这样做？ That’s what we’re here for. 这正是我们来的目的。 What’s she gone for this time? 她这次去干什么去了？ He was waiting for the bus. 他在等公共汽车。 【用法说明】在通常情况下，英语不用for doing sth 来表示目的。如： 他去那儿看他叔叔。 误：He went there for seeing his uncle. 正：He went there to see his uncle. 但是，若一个动名词已名词化，则可与for 连用表目的。如： He went there for swimming. 他去那儿游泳。(swimming 已名词化) 注意：若不是表目的，而是表原因、用途等，则其后可接动名词。(见下面的有关用法) 用法2：(表利益)为，为了。如： What can I do for you? 你想要我什么？ We study hard for our motherland. 我们为祖国努力学习。 Would you please carry this for me? 请你替我提这个东西好吗？ Do more exercise for the good of your health. 为了健康你要多运动。 【用法说明】(1) 有些后接双宾语的动词(如buy, choose, cook, fetch, find, get, order, prepare, sing, spare 等)，当双宾语易位时，通常用for 来引出间接宾语，表示间接宾语为受益者。如： She made her daughter a dress. / She made a dress for her daughter. 她为她女儿做了件连衣裙。 He cooked us some potatoes. / He cooked some potatoes for us. 他为我们煮了些土豆。 注意，类似下面这样的句子必须用for： He bought a new chair for the office. 他为办公室买了张新办公椅。 (2) 注意不要按汉语字面意思，在一些及物动词后误加介词for： 他们决定在电视上为他们的新产品打广告。 误：They decided to advertise for their new product on TV. 正：They decided to advertise their new product on TV. 注：advertise 可用作及物或不及物动词，但含义不同：advertise sth＝为卖出某物而打广告；advertise for sth＝为寻找某物而打广告。如：advertise for a job=登广告求职。由于受汉语“为”的影响，而此处误加了介词for。类似地，汉语中的“为人民服务”，说成英语是serve the people，而不是serve for the people，“为某人的死报仇”，说成英语是avenge sb’s death，而不是avenge for sb’s death，等等。用法3：(表用途)用于，用来。如： Knives are used for cutting things. 小刀是用来切东西的。 This knife is for cutting bread. 这把小刀是用于切面包的。 It’s a machine for slicing bread. 这是切面包的机器。 The doctor gave her some medicine for her cold. 医生给了她一些感冒药。 用法4：为得到，为拿到，为取得。如： He went home for his book. 他回家拿书。 He went to his friend for advice. 他去向朋友请教。 She often asked her parents for money. 她经常向父母要钱。

常用介词用法(for to with of)

For的用法 1. 表示“当作、作为”。如: I like some bread and milk for breakfast. 我喜欢把面包和牛奶作为早餐。 What will we have for supper? 我们晚餐吃什么? 2. 表示理由或原因,意为“因为、由于”。如: Thank you for helping me with my English. 谢谢你帮我学习英语。 3. 表示动作的对象或接受者,意为“给……”、“对…… (而言)”。如: Let me pick it up for you. 让我为你捡起来。 Watching TV too much is bad for your health. 看电视太多有害于你的健康。 4. 表示时间、距离,意为“计、达”。如: I usually do the running for an hour in the morning. 我早晨通常跑步一小时。 We will stay there for two days. 我们将在那里逗留两天。 5. 表示去向、目的,意为“向、往、取、买”等。如: Let’s go for a walk. 我们出去散步吧。 I came here for my schoolbag.我来这儿取书包。 I paid twenty yuan for the dictionary. 我花了20元买这本词典。 6. 表示所属关系或用途,意为“为、适于……的”。如: It’s time for school. 到上学的时间了。 Here is a letter for you. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如: Who are you waiting for? 你在等谁? For example, Mr Green is a kind teacher. 比如,格林先生是一位心地善良的老师。 尽管for 的用法较多，但记住常用的几个就可以了。 to的用法: 一：表示相对，针对 be strange (common, new, familiar, peculiar) to This injection will make you immune to infection. 二：表示对比，比较 1：以-ior结尾的形容词，后接介词to表示比较，如：superior ,inferior,prior,senior,junior 2: 一些本身就含有比较或比拟意思的形容词，如equal，similar，equivalent，analogous A is similar to B in many ways.

about重要用法归纳

about重要用法归纳 1. 表示“大约”，通常用于数字前。如： It costs about $10. 这需10美元左右。 He arrived at about 10 o’clock. 他大约10点钟到达。 2. 在动词know, hear, speak 等之后用不用介词about, 含义有差别。如： I have heard about him, but I don’t know him. 我听到过一些关于他的事，但不认识他这个人。 I’ve heard of him, but I don’t know about him. 我听说过他，但我不知道有关他的情况。 试比较： He knows her. 他认识她。 He knows of her. 他知道有她这样一个人。 He knows about her. 他知道有关她的情况。

3. be about to (do)，意为“即将”、“马上”。注意该短语不与具体的时间状语(如：soon, tomorrow, immediately 等)连用。如： We are about to leave for Beijing. 我们正要动身去北京。 不说：He is about to leave here tomorrow. 注意该短语可与并列连词when(这时)连用。如： I was (just) about to go to bed when the telephone rang. 我正要上床睡觉，这时电话铃突然响了起来。 在美国英语中，be about to do sth 的否定式，可表示“不愿意做某事”。如： I am not about to admit defeat. 我还不想认输。 4. about和on均可表示“关于”，但about主要指泛泛地或非正式地谈论某事，其谈论的内容也较为普通；而on则指比较有系统地或理论性较强地论述某事，其论述的内容较正式或较严肃。比较： He wrote on mathematics. 他撰写数学著作。

介词about的用法

介词about的用法 1.表示“关于” This movie is about Lei Feng 这部电影是关于雷锋的。 Something about your country 一些关于你们国家的事. 2.表示“大约” At about 6:00 大约在六点钟 About 100 meters 大约100米 3.与how/what连用，表示征求别人意见 How/what about + n/doing ？去...怎么样？/来个....怎么样？ How/what about + sb ？某人呢？ What about going for a walk? 去散步怎么样？ How about a cup of coffee? 来呗咖啡怎么样？ I like action movie.What about you? 我喜欢动作片。你呢？ 4.be about to do sth 正要做某事，就要做某事 The train is about to leave. 火车就要开了。 When he came to my home,I was about to go out. 他来我家时，我正准备出去。 5.带有about的动词短语 talk about sth 谈论某事 think about sth 考虑，想到 dream about sth 梦想某物/ 梦到某物 complain about sth 抱怨某物 worry about sb/sth 担心某人/某物 tell sb about sth 告诉某人某事 argue about sth 为某事吵架 hear about 听说 6.带有about的形容词短语 be angry about sth 因为某事生气 be careful about sth/sb 小心某物/某人 be worried about sb/sth 担心某人/某物 be curious about sth 对....很好奇 be excited about sth 对....感到激动 be happy/glad about sth 对...感到高兴 be sad about sth 对...感到难过 be sure/certain about sth 确信.../对...很确定/对...有把握 be serious about sth对...是认真的 be nervous about sth对...很紧张，不安 be upset about sth对...很不安

介词for用法完全归纳

用法1：(表目的)为了。如： They went out for a walk. 他们出去散步了。 What did you do that for? 你干吗这样做? That’s what we’re here for. 这正是我们来的目的。 What’s she gone for this time? 她这次去干什么去了? He was waiting for the bus. 他在等公共汽车。 【用法说明】在通常情况下，英语不用for doing sth 来表示目的。如：他去那儿看他叔叔。 误：He went there for seeing his uncle. 正：He went there to see his uncle. 但是，若一个动名词已名词化，则可与for 连用表目的。如： He went there for swimming. 他去那儿游泳。(swimming 已名词化) 注意：若不是表目的，而是表原因、用途等，则其后可接动名词。(见下面的有关用法) 用法2：(表利益)为，为了。如： What can I do for you? 你想要我什么? We study hard for our motherland. 我们为祖国努力学习。 Would you please carry this for me? 请你替我提这个东西好吗? Do more exercise for the good of your health. 为了健康你要多运动。 【用法说明】(1) 有些后接双宾语的动词(如buy, choose, cook, fetch, find, get, order, prepare, sing, spare 等)，当双宾语易位时，通常用for 来引出间接宾语，表示间接宾语为受益者。如：

of和for的用法

of 1....的,属于 One of the legs of the table is broken. 桌子的一条腿坏了。 Mr.Brown is a friend of mine. 布朗先生是我的朋友。 2.用...做成的;由...制成 The house is of stone. 这房子是石建的。 3.含有...的;装有...的 4....之中的;...的成员 Of all the students in this class,Tom is the best. 在这个班级中,汤姆是最优秀的。 5.(表示同位) He came to New York at the age of ten. 他在十岁时来到纽约。 6.(表示宾格关系) He gave a lecture on the use of solar energy. 他就太阳能的利用作了一场讲演。 7.(表示主格关系) We waited for the arrival of the next bus. 我们等待下一班汽车的到来。

I have the complete works of Shakespeare. 我有莎士比亚全集。 8.来自...的;出自 He was a graduate of the University of Hawaii. 他是夏威夷大学的毕业生。 9.因为 Her son died of hepatitis. 她儿子因患肝炎而死。 10.在...方面 My aunt is hard of hearing. 我姑妈耳朵有点聋。 11.【美】(时间)在...之前 12.(表示具有某种性质) It is a matter of importance. 这是一件重要的事。 For 1.为,为了 They fought for national independence. 他们为民族独立而战。 This letter is for you. 这是你的信。

for的用法完全归纳

for的用法完全归纳 用法1：(表目的)为了。如： They went out for a walk. 他们出去散步了。 What did you do that for? 你干吗这样做？ That’s what we’re here for. 这正是我们来的目的。 What’s she gone for this time? 她这次去干什么去了？ He was waiting for the bus. 他在等公共汽车。 在通常情况下，英语不用for doing sth 来表示目的。如：他去那儿看他叔叔。 误：He went there for seeing his uncle.正：He went there to see his uncle. 但是，若一个动名词已名词化，则可与for 连用表目的。如： He went there for swimming. 他去那儿游泳。(swimming 已名词化) 注意：若不是表目的，而是表原因、用途等，则其后可接动名词。 用法2：(表利益)为，为了。如： What can I do for you? 你想要我什么？ We study hard for our motherland. 我们为祖国努力学习。 Would you please carry this for me? 请你替我提这个东西好吗？ Do more exercise for the good of your health. 为了健康你要多运动。 (1)有些后接双宾语的动词(如buy, choose, cook, fetch, find, get, order, prepare, sing, spare 等)，当双宾语易位时，通 常用for 来引出间接宾语，表示间接宾语为受益者。如： She made her daughter a dress. / She made a dress for her daughter. 她为她女儿做了件连衣裙。 He cooked us some potatoes. / He cooked some potatoes for us. 他为我们煮了些土豆。 注意，类似下面这样的句子必须用for： He bought a new chair for the office. 他为办公室买了张新办公椅。 (2) 注意不要按汉语字面意思，在一些及物动词后误加介词for： 他们决定在电视上为他们的新产品打广告。 误：They decided to advertise for their new product on TV. 正：They decided to advertise their new product on TV. 注：advertise 可用作及物或不及物动词，但含义不同：advertise sth＝为卖出某物而打广告；advertise for sth＝为寻找某物而打广告。如：advertise for a job=登广告求职。由于受汉语“为”的影响，而此处误加了介词for。类似地，汉语中的“为人民服务”，说成英语是serve the people，而不是serve for the people，“为某人的死报仇”，说成英语是avenge sb’s death，而不是avenge for sb’s death，等等。 用法3：(表用途)用于，用来。如： Knives are used for cutting things. 小刀是用来切东西的。 This knife is for cutting bread. 这把小刀是用于切面包的。 It’s a machine for slicing bread. 这是切面包的机器。 The doctor gave her some medicine for her cold. 医生给了她一些感冒药。 用法4：为得到，为拿到，为取得。如： He went home for his book. 他回家拿书。 He went to his friend for advice. 他去向朋友请教。 She often asked her parents for money. 她经常向父母要钱。 We all hope for success. 我们都盼望成功。 Are you coming in for some tea? 你要不要进来喝点茶？ 用法5：给(某人)，供(某人)用。如： That’s for you. 这是给你的。 Here is a letter for you. 这是你的信。 Have you room for me there? 你那边能给我腾出点地方吗？ 用法6：(表原因、理由)因为，由于。如：

介词on 和about的辨析

we shall be pleased to send you the necessary information___ our machine tools. 为什么选择on而不是about？ 简单区分，about通俗大众；on学术【专业】性强 on与about 二者都是介词，意为“关于，论及”等，一般情况下，二者可以互相替换，但二者有点区别：about常用于简单的或浅显的论述等，是一般用语，多用于讲故事，谈话；思考等； on多用于系统论述或专题讲演、论著等，具有学术性，如：The teacher told us a story about Lei Feng. It's very moving. He will give us a talk on the history of the Party.他将给我们做个关于党史的报告。 正误例析今天下午我们将听一个关于非洲历史的演讲。 误：We're going to listen to a lecture about African history his afternoon. 正：We're going to listen to a lecture on African history this afternoon. 析：介词about和on都可以作“关于”解。on表示一本书、文章或演讲是严肃的、学术性的，可供专门研究这一问题的人们参考；about则表示其内容比较通俗，一般人都可阅读。 on多用于较严肃的或有关学术的场合，也表示关于某人或某事物的详情，常与talk,speak,report,lecture等词连用。 about常用于比较一般和随便的场合，表示关于某人或某事的详情，常与talk,speak, tell, hear,write, read,think等词连用。 about 的意义更广泛，on表示“关于。。。”通常只表示关于某学科，论题等如：We need to write an essay on this issue. 我们需要写一篇关于这个议题的论文。 This is an artical on biology。这是一篇关于生物学的文章。 这些用法在不正规场合，如口语中，可以用about代替，意思不变。 但about可以表示关于任何东西。

介词for 的常见用法归纳

介词for 的常见用法归纳 贵州省黔东南州黎平县黎平一中英语组廖钟雁介词for 用法灵活并且搭配能力很强，是一个使用频率非常高的词，也是 高考必考的重要词汇，现将其常见用法归纳如下，供参考。 1.表时间、距离或数量等。 ①意为“在特定时间，定于，安排在约定时间”。如： The meeting is arranged for 9 o’clock. 会议安排在九点进行。 ②意为“持续达”，常于last、stay 、wait等持续性动词连用，表动作持续的时间，有时可以省略。如： He stayed for a long time. 他逗留了很久。 The meeting lasted （for）three hours. 会议持续了三小时。 ③意为“（距离或数量）计、达”。例如： He walked for two miles. 他走了两英里。 The shop sent me a bill for $100.商店给我送来了100美元的账单。 2. 表方向。意为“向、朝、开往、前往”。常与head、leave 、set off、start 等动词连用。如： Tomorrow Tom will leave for Beijing. 明天汤姆要去北京。 He put on his coat and headed for the door他穿上大衣向门口走去。 介词to也可表示方向，但往往与come、drive 、fly、get、go、lead、march、move、return、ride、travel、walk等动词连用。 3.表示理由或原因,意为“因为、由于”。常与thank、famous、reason 、sake 等词连用。如: Thank you for helping me with my English. 谢谢你帮我学习英语。 For several reasons, I’d rather not meet him. 由于种种原因，我宁可不见他。 The West Lake is famous for its beautiful scenery.西湖因美景而闻名。 4.表示目的,意为“为了、取、买”等。如: Let’s go for a walk. 我们出去散步吧。 I came here for my schoolbag.我来这儿取书包。 He plays the piano for pleasure. 他弹钢琴是为了消遣。 There is no need for anyone to know. 没必要让任何人知道。 5.表示动作的对象或接受者,意为“给、为、对于”。如: Let me pick it up for you. 让我为你捡起来。 Watching TV too much is bad for your health. 看电视太多有害于你的健康。 Here is a letter for you. 这儿有你的一封信。

for和of的用法

for的用法： 1. 表示“当作、作为”。如: I like some bread and milk for breakfast. 我喜欢把面包和牛奶作为早餐。 What will we have for supper? 我们晚餐吃什么? 2. 表示理由或原因,意为“因为、由于”。如: Thank you for helping me with my English. 谢谢你帮我学习英语。 Thank you for your last letter. 谢谢你上次的来信。 Thank you for teaching us so well. 感谢你如此尽心地教我们。 3. 表示动作的对象或接受者,意为“给……”、“对…… (而言)”。如: Let me pick it up for you. 让我为你捡起来。 Watching TV too much is bad for your health. 看电视太多有害于你的健康。 4. 表示时间、距离,意为“计、达”。如:

I usually do the running for an hour in the morning. 我早晨通常跑步一小时。 We will stay there for two days. 我们将在那里逗留两天。 5. 表示去向、目的,意为“向、往、取、买”等。如: Let’s go for a walk. 我们出去散步吧。 I came here for my schoolbag.我来这儿取书包。 I paid twenty yuan for the dictionary. 我花了20元买这本词典。 6. 表示所属关系或用途,意为“为、适于……的”。如: It’s time for school. 到上学的时间了。 Here is a letter for you. 这儿有你的一封信。 7. 表示“支持、赞成”。如: Are you for this plan or against it? 你是支持还是反对这个计划? 8. 用于一些固定搭配中。如:

英语常用语法：about的用法与语法说明

英语常用语法：about的用法与语法说明 目前，AEIS报名受到的关注越来越高，AEIS录取 竞争越来越激烈。这里应广大学子的要求，为大家提供AEIS英语技巧，这次介绍的是about 的用法与语法说明。 1. 表示“关于”，注意与介词 on 的区别： about 指泛泛地或非正式地谈论某事，其谈论的内容也较为普通;而 on 则指比较有系统地或理论性较强地论述某事，其论述的内容较正式或较为严肃。试比较： (1) a book on rabbits 指的是一本论及兔子的学术著作 (2) a book about rabbits 指的可能是一本供小孩看的关于兔子的故事书 2. 表示“带在身上”，一般指随身带的小物品，有时可与表示类似含义的介词 with on 换用： He has a watch about [on, with] him. 他带着表。 3. 用于数字前，表示“大约”： The computer cost me about 600dollars. 这台电脑大约花了我600美元。 4. 在动词 know, hear, speak 等之后用不用介词 about / of, 含义有差别： I have heard about him, but I don’t know him. 我听到过一些关于他的事，但不认识他这个人。 I’ve heard of him, but I don’t know about him. 我听说过他，但我不知道有关他的情况。 比较： know sb 认识某人 know of sb 知道有某人 know aboutsb 知道有关某人的事或情况 hear sb 听到某人 (讲话) hear of sb听说过某人 hear about sb 听到关于某人的事或情况 5. be about to (do)，意为“即将”、“马上”。注意该短语不与具体的时间状语 (如： soon, tomorrow, immediately 等)连用：

英语中常见介词用法总结

英语中常见介词用法总结

攻击, fire at向…开火,glance at瞟一眼, glare at怒目而视, grieve at忧伤，knock at敲,laugh at嘲笑, look at看一眼, pull at拉扯, rejoice at对…高兴，smile at向某人微笑, shoot at朝…射击, stare at怒目而视,thrust at刺向, tear at撕, tremble at颤抖，wonder at吃惊，work at工作。例如： Don’t let me catch you again at it.不要再让我当场逮住你。 We must “shoot the arrow at the target”. 我们必须有的放矢。 They trembled at the sight of the peasant’s spears.看到农民的梭标，他们阵阵发抖。 2. be +形容词/过去分词+ at。其中at表示“情绪、情感的原因，或对某物具有某种感情”：be angry at恼怒于, b e alarmed at对…保持警觉,be astonished at对…吃惊, be bad at不擅长, be clever at对某事很灵巧,be delight ed at高兴，be disgusted at厌恶, be disappointed at对…失望，be good at擅长, be impatient at对…不够耐心, be mad at狂热于,be pleased at对…感到高兴, be present at出席, be satisfied at满意,be surprised at吃惊, be shocked at对…非常震惊，be terrified at受到…的恐吓,be quick at对…很机敏。例如： They were overjoyed at his return to work. 他们对他重返工作感到欣喜。 They are alarmed at the growth of the liberation movement in the colonies. 他们对殖民地日益壮大的解放运动警觉起来。 3.at+名词构成的词组：at a distance在一定距离，at a loss不知所措， at a time一次，at all一点也不，at any cost不惜一切代价，at best最好也只是，at first起初，at hand手头，at heart在内心里，at home在家；无拘束，at last最后，at least至少，at most最多，at once马上，at prese nt目前，at sea不知所措，at times有时，at will任意地，at work起作用，at worst最坏。 4.其它含有at的短语：work hard at勤奋工作，drop in at顺路拜访。 四、For 1.动词+for a)动词+for。for表原因、目的：account for解释；说明, answer for对…负责,apply for申请；请求, apologize f or为…而道歉, beg for请求, call for要求,care for在意, enter for报名参加, fight for为…而战, hope for希望,inq uire for查询；求见, leave for离开某地到另一地, look for寻找, long for盼望,mistake for误认为, plan for计划做某事, prepare for为…作准备,provide for为…提供, reach for伸手去拿, run for竞选, stand for象征,search fo r搜寻, send for派人去请, speak for陈述意见、愿望, take for当作, wish for希望, wait for等待。例如： His illness accounts for his absence. 他因病缺席。 The baby reached for the apple but couldn’t reach it.那婴儿伸手去苹果，但够不着。 He who would search for pearls must dive below.要想找到珍珠，必须潜到海底。 b)动词+sb.+ for +sth.。for表示原因或目的：ask for要求得到,blame for因…责备, excuse for宽恕, forgive for 谅解, pardon for原谅,pay for花钱买, praise for称赞, punish for对…进行惩罚,push for催逼，reward for酬谢, thank for对…表示谢意。例如： Please excuse me for my being late. 请原谅我的迟到。 Forgive me for my keeping you waiting. 请见谅，让你久等了。 2. be +形容词+for。for表作用、目的、对人或物有某种情绪等：be anxious for急于做, be eager for渴望, be b ad for有害于,be convenient for便于, be good for利于, be famous for以…出名,be fit for适合于, be grateful for 对…心存感激, be impatient for对…不耐烦,be late for迟到, be necessary for有必要, be ready for作好准备,be sorry for为…而后悔, be responsible for对…负责,be suitable for适合于, be unfit for不适合, be useful for对…有作用。例如： He is eager for success. 他渴望成功。 The government is responsible for the nation’s welfare.政府负责民众的福利。