（同步复习精讲辅导）北京市2014-2015学年高中英语 Unit4 Wildlife protection（二）讲义 新人教版必修2

Wildlife protection(二) 本讲目标被动语态被动结构:be +v-ed现在进行时：am/is/are+done过去进行时：was/were +done被动语态难点一. 无被动的词: 不及物动词、感官动词：happen, take place, break out, belong to …二. be made/seen/heard to do三. done, being done, to be done, having been done 表被动，非谓语四. 动词短语变被动，打包都变。 take care of—be taken care of 以主代被1. 表示物质固有特性时，以主代被。This kind of material cuts easily. 2. Need/want/require+doing 需要/想要被……The flowers need watering = to be wat ered. 3. Be worth doing This book is worth reading.4. 修饰名词的不定式与句中另一名词或者代词也是主谓关系时。 I have a letter to post. I have a letter to be posted. 5. 表语 adj.后的动词不定式。The question is easy to answer. 题一：— Hi, Terry, can I use your computer for a while this afternoon?— Sorry. _____. A. It’s repaired B. It has been repaired C. It’s being repaired D. It had been repaired题二：—What was that noise last night?—Oh, I forgot to tell you. The new machine _____. A. is being tested B. would be tested C. was being tested D. had been tested题三：Mary _______ the song at a party.A. heard sing B. was heard sing C. heard to sing D. was heard to sing题四：He has always insisted on his _____DR Turner instead of Mr. Turner. A. been called B. called C. having called D. being called 题五：Books of this kind _____well. A. sell B. sells C. are sold D. is sold 题六：Although the causes of cancer ____,we do not yet have any practical way to prevent it.A. are being uncovered B. have been uncovering C. are uncovering D. have uncovered 题七：—Why don’t you put the meat in the fridge?—It will ________ fresh for several days. A. be stayed B. stay C. be staying D. have stayed 题八：When the speaker...