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▲高考英語語法必考知識點：動詞不定式的完成進行式
形式
to have been + 現(xiàn)在分詞
He seems to have been spying for both sides.
他似乎一直在為兩方面搞秘密情報。
▲高考英語語法必考知識點：動詞不定式的完成進行式
用法
只要用于助動詞之后和appear，seem之后，但也可以用在happen，pretend以及believe，know，report，say，understand的被動式之后：
He appears to have been waiting a long time.相當于：
It appears that he has been waiting a long time.
看來他已經等了很久了。
He pretended to have been studying. 相當于：
He pretended that he had been studying.
他假裝一直在學習的樣子。
▲高考英語語法必考知識點：動詞不定式的完成進行式
句型用法
在There be句型中的動詞不定式：
For example one,There are too much homework to write.
two,There are students writing too much homework.
▲高考英語語法必考知識點：動詞不定式的完成進行式
強調動作在一段時間內反復發(fā)生。
We have been seeing quite a lot of each other recently.
最近我們常常見面.
Where have you been We have been looking for you everywhere.
你剛才在哪兒我們一直在到處找你呢!
He has been saying that for years.
這話他已經說了好幾年了.
It has been raining every day this month.
這個月天天下雨.
2、強調動作在長時間內持續(xù)不斷.
All these years they have been contributing articles to our magazine.
這些年來,創(chuàng)立們一直為我們雜志寫稿.
She has been writing the letter since four o”clock in the afternoon.
從下午四點鐘到現(xiàn)在,她一直在寫信.
We have been studying in this school for three years.
我們一直在這所學校學習了三年.
How long have you been watching TV
你看了多久電視了
2017年高考英語語法必考知識點：動詞不定式的完成式
2017年高考英語語法必考知識點：動詞不定式的被動式
2017年高考英語語法必考知識點：動詞不定式的進行式
2017年高考英語語法必考知識點：動詞不定式的特殊句型
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