九年级第三课重点(上).ppt

* Unit3重点知识梳理 1.被动语态的构成 由“助动词be ＋及物动词的过去分词”构成 2.被动语态的用法 当我们不知道谁是动作的执行者， 或者没有必要指出谁是动作的执行者， 或者只需强调动作的承受者时，要用被动语态。 3. allow sb. to do sth. 允许某人做某事（主动语态） 　 Mother allows me to watch TV every night. 　 be allowed to do sth. 被允许做某事（被动语态） 　 LiLy is allowed to go to Qinzhou. Unit3重点知识梳理 4. get their ears pierced 穿耳洞 　让/使（别人）做某事　 get sth. done(过去分词)=have sth. done 　I get my car repaired. == I have my car repaired. 5. enough 足够　 形容词＋enough 如：beautiful enough　 enough＋名词　 如：enough food enough to do　足够…去做…　如： I have enough money to go to Beijing. She is old enough to go to school. Unit3重点知识梳理 6.stop doing sth.停止做某事　 Please stop speaking. stop to do sth. 停止下来去做某事 Please stop to speak. 7.看起来好像…sb. seems to do sth. = It seems that +从句 He seems to feel very sad. It seems that he feels very sad. Unit3重点知识梳理 8.倒装句: 由so＋助动词(be/do/will/have)/情态动词＋主语　 意为：…也是一样 She is a student. So am I.　 She went to school just now. So did I . She has finished the work. So have I . She will go to school. So will he.　 由Neither/Nor + be动词/助动词/情态动词+主语 (前为否定) 表示与前面所述事实一致. Tom can’t swim. Neither can John. Unit3重点知识梳理 9. yet 仍然，还　常用在否定句或疑问句当中 可与although/though连用 10. stay up 熬夜如： I often stay up until 12:00pm. 11. clean up 打扫　整理　如： 　　I have cleaned up the bedroom. Unit3重点知识梳理 13. .be strict with+人. be strict in+事物. 例: The head teacher is strict with his students He is strict in the work. 14. take the test 参加考试 pass the test 通过考试 fail a test 考试失败 15. the other day前几天,不久前的一天.(用于过去时) every other day = every two days 每隔一天 （每两天） 16. agree 同意　反义词 disagree不同意 动词 agreement 同意　反义词 disagreement Unit3重点知识梳理 17. keep sb/ sth. ＋形容词　使某人/某物保持…. We should keep our city clean. Don’t keep me waiting for a long time. 18. both…and…　+动词复数形式 如：Both Jim and Li Ming play bastketball. 19. learn (sth.) from sb. 向谁学习(什么) 21. have an opportunity to do sth. 有机会做某事 have a chance of