文档介绍：非谓语动词important-
主2 （being ） +adj/adv./prep./n., 主1+句子
主2 done/doing/having done/ having been done, 主1+句子
2019there.
注意：如果句中的except或but 之前有实义动词动词do的限定形式或非限定形式，其宾语为不带to的不定式，否则，其宾语为带to的不定式。
Lots of empty bottles were found under the old man’s bed. He must have done nothing but drink.
(1989年考研题)
第三章 非谓语动词
This hedge is to prevent rabbits from getting into the yard.
  不定式作状语可表示目的、结果、原因等。
The students stopped to listen to the teacher. (目的)
He rushed to the classroom only to find nobody there. (结果)
I am happy to hear from you. (原因)
常用句型：in order (not) to；
so as (not) to 以便； so (such) as to ；
be so kind (good) as to ；be kind (good) enough to ；
too…to…； (not) enough to
第三章 非谓语动词
6. As a public relations officer, he is said ____ some very influential people. (2019年6月四级题单选34题)
have been knowing B) to be knowing C) to have known D) to know
7. The bank is reported in the local newspaper ____ in broad daylight yesterday. (2019年1月大学英语四级题单选63题)
robbed B) to have been robbed C) being robbed D) having been robbed
第三章 非谓语动词
8. The project, ___ by the end of 2019, will expand the city’s telephone network to cover 1,000,000 users. (2019年6月大学英语四级题单选68题)
accomplished B) being accomplished
C) to be accomplished D) having been accomplished
9. I have heard both teachers and students ___ well of him. (2019年6月大学英语四级题单选46题)
to speak B) spoken C) to have spoken D) speak
10. They are going to have the serviceman ____ an electric fan in the office. (2019年1月大学英语四级题单选44题)
A) install B) to install C) to be installed D) installed
第三章 非谓语动词
动名词
语态
时态
主动语态
被动语态
一般式
doing
being done
完成时
having done
having been done
第三章 非谓语动词
作主语
Walking around in a city is rather tiring.
在一些结构里，需用it 作形式主语，把用作实际主语的动名词置后，可避免动名词结构太长造成头重脚轻。
构成形式为：It’s + 形容词/名词 + 动名词
It's no good complaining about the bad service to the hotel.
It’s