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1、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. container 7. example 例子( exam; simple ) 8. harmful 有害的( harm n.; harmless )9. oxygen 氧气 10. produce 生产(= mak
2、e; 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)
3、 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 dail
4、y lives 在我们日常生活中9. come/ be from 来自 10. air pollution 空气污染 11. writedown 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 = ma
5、ny / much 许多21. discuss = talk about = talkover 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 doin
6、g 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）; ta
7、ke 拿走；带走; bring 拿来；带来; fecth 去拿来 = go and bring 2. 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。
8、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 Its 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.Its 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ing 4、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)
9、 + 现在分词 Jim is singing.否定句：主语 be(am, is, are) + not + 现在分词 He isnt 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 isnt.（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 arent playing football on
10、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?肯定式否定式单数I am working.You are working.He/ She is working.I am not working.You are not working.He/ She is not working.复数We/ You/ They are working.We/ You/ They are not working. 附:
11、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：cookcooking、readreading、looklooking2、以不发音的e结尾，去e加ing，如：makemaking, havehaving、writewriting3、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:runrunning, stopstopping、swimswimming、sitsitting、beginbeginning4、 以y或w结尾的动词,直接加-ing: playplaying flyflying throwthrowing5、 但 die
12、 (死) dying lie(躺;说谎) lying tie(系;捆) tying fixfixing五、写作指导 作文范文：（一） Save the trees Trees 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 aro
13、und 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 dont start protecting them from now on, well 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
