文档介绍：A/B 级考试重点语法与词汇重点语法 Over the past decades, sea ice ____ in the Arctic ( 北极) as a result of global warming. A. had decreased B. will decrease C. has been decreasing D. is decresing 答案: C过去的数十年间,北极的海洋冰川由于全球变暖而一直递减。 2. 条件状语从句: “主将来,从一般” If it ____ tomorrow, we will stay indoors to have our training class. A. rains B. rain C. will rain D. rained 答案: A 3. 情态动词+现在完成时 must have done should have done could have done would have done Exercises: 1. He ____ pleted his work; otherwise, he wouldn ’ t be enjoying himself by the seaside. A. should B. must C. wouldn ’ t D. can ’t 答案: B 2. Tom, you ’ re too lazy! The work _____ have been finished yesterday. A. would B. should C. must D. could 答案: B 3. Without your help, I _____ have achieved so much. A. can ’ t B. shouldn ’ t C. wouldn ’ t D. musn ’t答案: C 4. 强调句型: It is ( was )+被强调的部分+ that (who) …被强调的部分为“物”时用 that ,为“人”时用 who It was on Monday night that all this happened. It is me who he blamed . Exercise: It was in 2005 ____ we began to introduce this new technique into pany. A. which B. then C. when D. that 答案: D 5. 虚拟语气(1) wish+ 过去时:表示现在或将来的愿望 wish+ 过去完成时:一个过去没有实现的愿望 I wish I were as tall as you. I didn ’ t go to the party, but I do wish I had been there. Exercise: ---- Did you see her off the day before yesterday? ---- No, but I wish I _____. A. were B. did C. had D. would 答案: C (2) would rather+ 过去时,表示“宁愿,宁可” I would rather all of you came next month for a dinner. Exercise: “ Shall I give you a cheque for $ 10 ?” A B “I’ d rather you give me $ 10 in notes .” C D 答案: C give gave (3) It is (high) time (that)+ 过去时(早)该…了 Don ’ t you think it is time you gave up smoking? Exercise: It is about time that we go to supper , for we stil