文档介绍：M2U1 grammar 学案
(如今完成时和如今完成进展时)
探究发现
①I haven’t seen Justin since.
②Detective Sam Peterson, who has taken charge of，我们没有收到她一封信。
名师点津：(1)该用法中的动词多是延续性动词,不能是非延续性动词或趋向动词。
（2)非延续性动词用于否认句可以表示否认的状态,故可以用来表示状态的持续。
(3）由since 引导的时间状语中， since 后面的时间名词必须是“点时间”，而不能是“一段时间”;而for 短语中的时间名词必须是“一段时间”(有时for 可省去)。（精品文档请下载）
①I’ve known him since 1980。
②He hasn’t written to me for two years。
③I have learnt English (for) many years。
［即时演练2]
⑴单句改错
①She lives in Beijing since she came to China.
②They are friends for 10 years。
③In the last ten years, many changes took place in my hometown。（精品文档请下载）
④I heard nothing from him up to now。
⑤I have bought the car for 3 years。
⑵（北京高考）Shakespeare’s play Hamlet ________ into at least ten different films over the past years.（精品文档请下载）
A．had been made B．was made
C．has been made D．would be made
⑶(湖南高考)—I remember you were a talented pianist at college. Can you play the piano for me？（精品文档请下载）
-Sorry， I ________ the piano for years。
A．don’t play B．wasn't playing
C．haven’t played D．hadn't played
3．如今完成时的常用句型
（1)It/This is the first/second/.。.time that ＋主语＋谓语部分(常用如今完成时)（精品文档请下载）
（2）It has been ＋一段时间＋ since +主语+did
(3）It/This/That is the＋最高级＋名词＋定语从句(定语从句常用如今完成时)
This is the first time that I have been to this city. （精品文档请下载）
这是我第一次来这座城市。
It has been two years since we saw each other。
自上次一别，我们有两年没见了。
This is the best film （that) I’ve ever seen。
这是我所看过的最好的一部电影。
［即时演练3]
翻译句子
①这是我第一次来上海.
②这是我见过的最漂亮的画.
4．在时间或条件状语从句中，如今完成时可以代替将来完成时
If you have done the experiment, you will realize the theory better.（精品文档请下载）
假设你做过这个实验，你会更好地理解这个理论的。
[即时演练4]
用所给动词的适当形式填空
①If you (finish) the book, please return it to me。（精品文档请下载）
②Don’t get off the bus until it （stop）．（精品文档请下载）
③I shall post the letter as soon as I （wri