《Unit 9 When was it invented（第一课时）》导学案
基本结构：助动词be（was / were）+及物动词的过去分词
A thief was caught last night.
They were asked to speak at the meeting.
肯定式：It was made.
否定式：It was not made.
疑问式：Was it made? No, it wasn’t Yes, it was
典型例题解析： 1.--What a nice classroom! --It ____ every day.
A. is cleaning B. has cleaned C. must clean D. is cleaned
解析：推测这句话的意思应该是“它每天都被打扫”，考查被动语态的结构be + 动词的过去分词。因此答案应该选D。
2.I know Beijing well. I ____ there three times. A .will go B. have been C. went D. have gone
解析：推测这句话的意思“我很了解北京，我去过那三次”。表示去过应该采用的时态是现在完成时，因此可排除A和C，区别have been和have gone,have been 去过；have gone 去了（还没回来）。因此应该选择B。
1.--Look at the sign on the right. --Oh, smoking ____ here.
A .doesn’t allow B. isn’t allowed C. didn’t allow D. wasn’t allowed
2. --Will you come to the dinner party? --I won’t come unless Jim ______.
A. can’t be invited B. was invited C. will be invited D.is invited
一、Fill in the blanks with the words given:
1.The work _______(finish)tomorrow morning. 2.The books must______(give)back on time. 3.I think the telephone _____ (invent) in 1876.
4.Tea may _______(invent) by accident.
5.The ruler _____(use )since I began my school life.
6.The bikes are used for_____(ride)on.
（1）She was seen to come out of the library by him.(变为主动语态) He out of the library.
（2）When are trees often planted?(变为主动主态) When people often ?
（3）The League founded in Guang zhou in 1992.(就画线部分提问) the League ?
（4）Did the students wear the school clothes a lot?(变为被动语态) the sclool clothes a lot?
（5）Kate took good care of the baby yesterday evening.(变为被动语态) The baby well by Kate yesterday evening.
（6）His aunt bought him a bicycle.(变为被动语态) A bicycle him by his aunt.