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...