1．(教材原句P18)Over time I have_been_changed (change) quite a lot.
2．(教材原句P18)Since the 1970s many new applications have_been_found (find) for me.
3．(教材原句P18)I have_been_used (use) in offices and homes since the 1970s.
4．The ink has_not_been_removed from the clothes.
5．Haven't your problem been solved?
6．How many buildings have_been_built in your school?
[共性呈现]
1．以上几句中的时态和语态是 现在完成时的被动语态。
2．以上几句中第①②③句是该时态的 肯定句式；第④句是 否定句式；第⑤句是 一般疑问句式；第⑥句是 特殊疑问句式。
[语法精释]
一、结构
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肯定式
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主语＋have/has been done...
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否定式
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主语＋have/has not been done...
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一般疑问式
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Have/Has＋主语＋been done...？
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特殊疑问式
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疑问词＋have/has＋主语＋been done...？
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①He has been selected to take part in the sports meeting.
他已被挑选出来参加运动会。
②The ink has not been removed from his overcoat.
墨迹还没有从他外套上去掉。
③Has the date for the next meeting been decided?
下次会议的日期已决定了吗？
④How long has the battery not been changed?
电池多久没有更换了？
[即时演练1] 变换句子
The children have already been told the good news.
(1)将上面的句子变为否定句。
The_children_haven't_been_told_the_good_news_yet.
(2)将上面的句子变为一般疑问句。
Have_the_children_been_told_the_good_news_yet?
(3)将上面的句子对the children进行提问。
Who_has_been_told_the_good_news_yet?
