初三英语上册(人教新目标)Unit_13_We’re_trying_to_save_the_earth!_知识点总结.docxVIP

初三英语上册（人教新目标）Unit 13 We’re trying to save the earth!?知识点总结一、重点词汇 词义辨析：cost/spend/take/pay ? 都与“花费”有关，但用法上有区别。?coststh. costs (sb.) +money?spend1. spend+ time/money on sth.2. spend +time/money (in) doing sth.?takeIt takes (sb.) time +to do sth.?paypay (sb.)+money for sth. 因此，“他们花两年建造这座桥”可以表示为： They spend two years on this bridge. =They spent two years (in) building this bridge. =It took them two years to build this bridge. “我花了2000块钱买这台电脑”可以表示为： I spent 2000 Yuan on the new computer. =I spent 2000 Yuan (in) buying the new computer. =The new computer cost me 2000 Yuan. =I paid 2000 Yuan for the new computer. 词义辨析：take part in/join/join in/attend ? 这些动词或词组均含“参加，加入”之意。?take part in常指参加大型比赛或活动。?join特指加入党派、团体等；join sb. in (doing) sth.?指“和某人一起做某事”。?join in多指参加小规模的活动，如：球赛、游戏等。?attend侧重参加或出席会议、学术活动、音乐会、上课等等，着重强调成为其中的听众或观众。??A lot of college students took part in the movement last year.? 去年很多大学生参加了那个运动。 His brother joined the army two years ago.? 两年前他哥哥参军。?May I join in your discussion???我可以参加你们的讨论吗？?Hundreds of students attended the lecture given by the famous professor.?数百人参加了这位著名教授的讲座。? ?词义辨析：turn词组??turn on打开?turn off关上?turn up把……调高?turn down把……调低?turn out原来是，结果是?turn out (to be) +adj./n.?turn around转身?turn back返回?turn to翻到……；求助于……?turn into将……转变为……；译成……?turn over翻转? The experiment turned out to be a success. 实验是成功的。?I turned around to see who was calling me. 我转过身看谁在喊我。 Please turn to Page 10. 请翻到第十页。 I have turned into a woman with strong will.?我已经变成了意志坚定的人。 She turned over and fell to sleep. 她翻了翻身，睡着了。 afford to do sth.：买得起……，足够支付…… ? We can’t afford to pay such a high price. 我们付不起这个价钱。 be harmful to：对……有害? Staying up often is harmful to your health. 经常熬夜对你的健康有害。 拓展： 1. harm：n. 害处?2. do harm to：对……有害 at the top of：在……顶端? There was not enough oxygen at the top of the mountain. 山顶上缺氧。 He shouted at the top of his voice in order to be heard.?他尽力大声叫喊，以便别人能听见。?拓展：反义词?at the bottom of：在……的底端 take action：采取行动? The police had to take action to deal with the riots. 警方不得不采取行动来对付骚