1.现在完成时着重表示动作的结果
I have read that book.我读过那本书了。（知道那本书的内容）
2.着重表示过去发生的动作持续到现在还将继续下去
—Hi,Tracy,you look tired.
—I am tired.I_______ the living room all day.
A. painted B. had painted C. have been painting D. have painted
【解析】答案为C。强调动作从过去到现在的延续，可能还将继续下去。
（十一）过去将来时
相对于过去某一时刻而言即将发生的动作或存在的状态。
He told me he would go to Beijing.他告诉我他将去北京。
I was told that he was going to return home.有人告诉我他准备回家。
would do(表示过去的习惯)总是，总会，常常。
He would sit silent for hours.他常常接连好几个小时默默地坐着。
（一）被动语态的构成形式
（二）被动语态使用注意点
1.主动表示被动的几种情况
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