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B3U3 The world of science
Using language— Present perfect passive
语法感知：
①I guess you have been asked about the title of your book before. ②The ink has not been removed from the clothes. ③Haven’t your problems been solved ④How many buildings have been built in your school
Summary:
1.以上例句中都使用了______________________( )。
2.以上例句中第①句是该时态的__________句式；第②句是__________句式；
第③句是______________句式；第④句是_____________句式。
一、结构
肯定式
否定式
一般疑问式
特殊疑问式
　据提示完成句子
The children have already been told the good news.
→The children the good news yet.(变为否定句)
→ the good news yet？(变为一般疑问句)
→ the good news yet？(对the children进行提问)
二、用法
1.现完的被动语态: __________________________________________________，常与already，yet，just，never，recently等副词连用。
The machine has already been repaired.
2.表一个被动的动作或状态开始于过去，持续到现在，并可能持续下去，常与for
或since引导的时间状语连用，或用于“How long...？”句型中
How long has this film been shown
3.在时间、条件状从中：用现完的被动语态代替将完的被动语态。
You shouldn’t leave school before your homework ___________________(finish).
注：常与现在完成时(_________________)连用的时间状语：
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
单句语法填空
①A large amount of solar energy (convert) into electrical energy in the past few years.
②So far millions of pounds’ worth of damage (cause) by a storm which swept across the north of England last night.
③Since 1949，the people’s living standard (raise)，causing a big rise in population.
④In the past few years，more than 300 marine and island tourism and recreational zones (develop) in the coastal areas，with a variety of marine features.
⑤When and where to go for the holiday (not decide) yet.
三、现完的被动语态与一过的被动语态的区别
The big fire was put out two hours ago.
The big fire has been put out.
四、注意事项
1.带有双宾语的vt.(give，send，show，tell，lend，promise等)变为被动语态时:
The company has given him a chance to work abroad recently.
→He __________________________ to work abroad recently (by the company).
→A chance to work abroad ______________________ recently (by the company).
2.不及物动词(词组)或表状态的动词(词组)_________________________
(happen，take place，break out，belong to，cost，last, etc.)
(1)将下面的句子变为被动语态
①I have asked her to help you.→She to help you.
②We have planted many trees on the hill in the last 5 years.
→Many trees on the hill in the last 5 years.
③He has sent me an e－mail. →I an e－mail.
→An e－mail me.
(2)单句语法填空
④Shakespeare’s play Hamlet (made) into at least ten different films over the past years.
⑤With a lot of progress made，great changes (take) place in our school since 2016.

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