新牛津深圳版英语七年级下册第4单元知识要点

新牛津深圳版英语七年级下册第4单元知识要点一、单词：1. disease 疾病( illness )2. convenient 方便的(= easier; convenience n. )3. branch 树枝( branches pl. )4. discuss 讨论(= talk about; discussion n.)5. against 反对( again )6. container7. example 例子( exam; simple ) 8. harmful 有害的( harm n.; harmless )9. oxygen 氧气 10. produce 生产(= make; product; production ) 11. gas 气体 12. pine 松树( fine; line; mine; nine; wine ) 13. hole 洞;孔( whole 整个的 ) 14. furniture 家具( 不可数名词; future )15. save 拯救( safe adj. ) 16. imagine 想象( imagination n. imagine doing ) 17. dig 挖( dug; digging ） 18. major 主要的(= big and important = main ) 19. carry 搬运；携带(marry结婚) 20. root 根( foot; boot; room; roof )21. fight 与…作斗争( fighter n. fought; eight; light; might; night; right; sight )二、词组：1. take in=absorb 吸收2. know/ learn about 了解；学到3. for example 例如4. in fact=as a matter of fact 确切的说；实际上5. look around 环顾四周6. millions of 大量的，数以百万计的7. be made of 由…制成 8. in our daily lives 在我们日常生活中9. come/ be from 来自 10. air pollution 空气污染11. write…down 写下；记下 12. with the help of …在…的帮助下13. cut down 砍倒 14. be good for 对有利/好处15. as a result 结果是 16. living things 生物；有生命事物17. fight against 与…作斗争 18. be good at = do well in 擅长于；在某方面好19. be in danger 处于危险中 20. a lot of = lots of = many / much 许多21. discuss = talk about = talk…over 讨论；商讨22. be bad for = be harmful to = do harm to 对…有害23. have fun = have a good time = enjoy oneself 过得愉快；玩得开心24. provide sb with sth = provide sth for sb = offer sth to sb 给某人提供某物三、句型结构：1. stop doing sth 停止做某事2. stop to do sth 停下来去做另件事3. imagine doing sth 想象做某事4. imagine sb to do sth 想象某人做某事5. help sb do sth 帮助某人做某事6. plan to do sth 计划打算做某事7. want to do sth = would like to do sth = feel like doing sth 想要做某事8. want sb to do sth = would like sb to do sth 想要某人做某事9. keep / make … adj. 使… keep clean make the room beautiful辨析：1.carry搬运；携带（无方向性）; take拿走；带走; bring拿来；带来;fecth去拿来 = go and bring2. be made of由...制成; be made from由...制成; be made up of由...组/构成The table is made of wood. 桌子是用木头制成的。

(看得见原材料。

)The wine is made from grapes. 酒是用葡萄酿造的。

(看不见原材料。

)China is made up of over thirty provices. 中国是由三十多个省组成的。

四、语法：现在进行时态1. 定义：现在进行时表示现在正在发生的动作或存在的状态。

也可表示现阶段在进行的动作。

2. 标志(时间): now= at the moment提示词: Look Listen It's 8:00 now.对这些时间状语提问时用疑问词when例: Look! They are playing football. Listen! The girl is singing in the room.It’s 12:00 now. Mr.Smith is having lunch3、现在进行时态构成：主语+ be动词现在式（am、is、are）+动词ing4、现在进行时的几种句型：（一）陈述句（肯定句、否定句）肯定句：主语＋ be(am, is, are) + 现在分词 Jim is singing.否定句：主语＋ be(am, is, are) + not + 现在分词 He isn’t reading English. （二）一般疑问句；（变疑问句将be动词移到句首主语前）Be(Am, Is, Are) + 主语＋现在分词 Is Tom working? Yes, he is. No, he isn’t. （三）特殊疑问句疑问词＋ be (am, is, are) ＋主语＋现在分词例: They are playing football on the playground now.否定句: They aren't playing football on the playground now.一般问句: Are they playing football on the playground now?特殊问句: What are they doing on the playground now?附:动词的现在分词的构成规则(v.-ing)1、一般情况下，直接加ing，如：cook→cooking、read→reading、look→looking2、以不发音的e结尾，去e加ing，如：make→making, have→having、write→writing3、以一个元音字母 + 一个辅音字母结尾的重读闭音节动词,双写该辅音字母,再加- ing:run→running, stop→stopping、swim→swimming、sit→sitting、begin→beginning4、以y或w结尾的动词,直接加-ing: play→playing fly→flying throw→throwing5、但 die (死) →dying lie(躺;说谎) →lying tie(系;捆) →tying fix→fixing五、写作指导作文范文：（一）Save the treesTrees are our best friends on Earth. They produce oxygen for us to breathe, and they take in waste gas from cars and other harmful gases from the air.Trees also make our lives more comfortable and convenient. Look around and you will find that a lot of products are made of wood.However, trees are now in danger. People cut down millions of trees every year. Can you imagine the world without trees? In fact, if we don’t start protecting them from now on, we’ll soon lose our friends, the trees.（二）Trees are our good friendsTrees are very important in our daily life. They are our good friends.Trees keep the air cool and clean, they take in harmful gases from the air and produce oxygen for us to breathe. They are major fighters against air pollution and make cities beautiful.Trees make our lives more convenient. They provide a lot of useful things for people, such us paper, food and oil. Trees also stop water and soil from going away.In a word, we can’t live without trees. We should stop cutting down millions of trees every year. We should plant more trees and take care of them.Tree Planting DayYesterday it was March 12 --- Tree Planting Day. We went to the hill to plant tress with our teachers. There we learned how to plant trees. We also learned a lot about plants. For example, trees can help clean the air. They give us food, such as apples, oranges, grapes, peached and pears. People and other animals need them to live. We planted a lot of trees yesterday. We were very tired, but we felt very happy.I、写出下列动词的现在分词形式：1.sing2.live3.ski4.run5.carry6. get7.stop8.die9.throw 10.write11.dig 12.dance 13.know 14.begin 15.clean II、词语释义：1.Air pollution is a major pollution.A. big and importantB. smallC. easyD. not important2. Trees produce oxygen for us to breathe.A. getB. makeC. goD. take3. We talked about the problem in our class meeting yesterday afternoon.A. discussB. discussedC. thinkD. thought4. Do you come from Australia?A. Are...fromB. Do...fromC. eD. e from5. I really did my homework by myself this time.A. alongB. of oneselfC. aloneD. have no time6. People rescued the sleeping baby from the fire.A. tookB. carriedC. savedD. dug7. Do you think one pill (药丸) can cure all kinds of disease in the future?A. cancerB. illnessC. stomachache(胃病)D. cold8. Mr Green is a blind man. He always goes everywhere with a guide dog.A. can’t hearB. can’t smellC. can’t seeD. can’t walk9.Trees are important because they can take in harmful gases.A. makeB. absorbC. stopD. put10. Life is more convenient than before.A. easierB. harderC. the easiestD. the hardestIII、根据句意，用所给词的正确形式填空：1.Eating too much junk food is ( harm ) for our health.2.The camel(骆驼) is a ( use ) animal when you travel in the desert.3.Jack, can you help me ( carry ) this heavy box?4.Look! Mary and Lucy ( play ) badminton on the playground.5.Look! She ( lie ) under the tree, looking into the sky.6.A: Where are the students? B: They ( have ) a music class.7.Ma Yun is a ( success ) man.8.I can’t speak ( France ) thought I have lived in France for several years.9.It is ( help ) for us to learn another foreign language.10.Let’s go ( ski ) on the weekend.11.Children are all ( cheer ) on Children’s Day.12.We need water in our ( day ) lives.13.Tim has been a fire ( fight ) for five years.14.We should stop ( pollute ) the earth.15.There are many ( leaf ) on the playground in autumn.。