1、Unit 13 We are trying to save the earth!Section A1.play a part in参与+n./pron./ving eg：I want to play a part in saving the earth.2.cut down减少动副短语cut短语cut in 插嘴cut off 切断cut up 切碎cut out 删除3.advantage优点可数名词have the advantage of有的有利条件be to. advantage对有利4.make a difference起作用；有影响make a difference （to.）（对
2、）产生影响或作用5.not only.but also.不但而且连接两个对等的成分，also 可以省略eg: I not only play tennis but (also) practise shootingeg: Not only Mr. Li but （also）his son loves the movie.连接两个主语时，就近原则eg:Not only does Miss Li like music, but (also) she likes sports6.harmful有害的do harm to对造成伤害eg: Smoking will do harm to your heal
3、th.be harmful to对 有害eg: Dont read in the sun. It is harmful to your eyes7.the number of的数量eg：The number of girls in our class is 30辨析a number of许多接可数名词复数谓语动词用复数形式the number of的数量接可数名词复数谓语动词用单三形式8.be against.反对反：be for.支持eg: I am not against your idea. Instead, Im for you9.现在进行时与now, at the moment, r
4、ight now, these days.连用eg：She is watching TV now.现在进行时表将来与come，go，arrive，leave，start等动词连用eg: Im leaving tomorrow10.现在完成时构成助动词have/has+ 动词的过去分词eg: Have you ever been to Japan ？固定结构have/has been to曾经去过某地，现在已不在某地eg: I have been to the USA twice.have/has gone to去某地了，可能在途中，也可能到了那里，总之人不在说话处eg: Wheres Jim?
5、 He has gone to the library. have/has been in在某地呆了一段时间，经常与“for+ 一段时间”连用eg: We have been in this city for three years.11.被动语态基本结构be+ 动词的过去分词eg: The glass is broken转换主动语态We visited that factory last summer.被动语态That factory was visited by us last summer.感官动词/使役动词变为被动语态时带to主动: I often hear Mary sing in
6、the next room被动：Mary is often heard to sing in the next roomSection B1.recycle回收利用eg: We recycle all of our plastic bags.2.throw away扔掉；抛弃eg: You can throw them away if you dont want these clothes.3.pull.down拆下；摧毁put短语pull together齐心协力pull off 脱去pull out拔出pull in(车等)停下,进站4.win a prize赢得奖品辨析win赢，获胜后接
7、比赛、活动、奖品beat击败；打败后接人或团队等竞争对手5.set up建立set短语set off/out动身,出发set free释放set down写下,记下 6.bring back恢复；归还；带回eg: Please bring back the books to the library.7.creativityn.creator创造者,发明v.create创造adj.creative创造性的Section A1.play a part in参与+n./pron./ving eg：I want to play a part in saving the earth.2.cut down
8、减少动副短语cut短语cut in 插嘴cut off 切断cut up 切碎cut out 删除3.advantage优点可数名词have the advantage of有的有利条件be to. advantage对有利4.make a difference起作用；有影响make a difference （to.）（对）产生影响或作用5.not only.but also.不但而且连接两个对等的成分，also 可以省略eg: I not only play tennis but (also) practise shootingeg: Not only Mr. Li but （also）h
9、is son loves the movie.连接两个主语时，就近原则eg:Not only does Miss Li like music, but (also) she likes sports6.harmful有害的do harm to对造成伤害eg: Smoking will do harm to your health.be harmful to对 有害eg: Dont read in the sun. It is harmful to your eyes7.the number of的数量eg：The number of girls in our class is 30辨析a nu
10、mber of许多接可数名词复数谓语动词用复数形式the number of的数量接可数名词复数谓语动词用单三形式8.be against.反对反：be for.支持eg: I am not against your idea. Instead, Im for you9.现在进行时与now, at the moment, right now, these days.连用eg：She is watching TV now.现在进行时表将来与come，go，arrive，leave，start等动词连用eg: Im leaving tomorrow10.现在完成时构成助动词have/has+ 动词
11、的过去分词eg: Have you ever been to Japan ？固定结构have/has been to曾经去过某地，现在已不在某地eg: I have been to the USA twice.have/has gone to去某地了，可能在途中，也可能到了那里，总之人不在说话处eg: Wheres Jim? He has gone to the library. have/has been in在某地呆了一段时间，经常与“for+ 一段时间”连用eg: We have been in this city for three years.11.被动语态基本结构be+ 动词的过去
12、分词eg: The glass is broken转换主动语态We visited that factory last summer.被动语态That factory was visited by us last summer.感官动词/使役动词变为被动语态时带to主动: I often hear Mary sing in the next room被动：Mary is often heard to sing in the next roomSection B1.recycle回收利用eg: We recycle all of our plastic bags.2.throw away扔掉；抛
13、弃eg: You can throw them away if you dont want these clothes.3.pull.down拆下；摧毁put短语pull together齐心协力pull off 脱去pull out拔出pull in(车等)停下,进站4.win a prize赢得奖品辨析win赢，获胜后接比赛、活动、奖品beat击败；打败后接人或团队等竞争对手5.set up建立set短语set off/out动身,出发set free释放set down写下,记下 6.bring back恢复；归还；带回eg: Please bring back the books to the library.7.creativityn.creator创造者,发明v.create创造adj.creative创造性的
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