内容正文:
【暑假辅导班】
2021年新高二英语暑假精品课程(人教版2019)
第13讲 选择性必修一 Unit 3 Learning About Language
动词-ing形式作主语
一、动词-ing形式作主语
1. 动词-ing形式作主语的功能及基本用法
功能: 动词-ing形式作主语时, 多表示经常性、习惯性的动作, 谓语动词多用单数形式。
*Using cocaine increases the user’s heart rate and blood pressure. 使用可卡因会加快使用者的心率并使血压升高。
*Wasting a person’s time is the same as killing him for his property. 浪费别人的时间无异于谋财害命。
注意:
意义不同的两个动词-ing形式并列作主语时, 谓语动词需用复数形式。
*Listening to the English tapes and watching English films are good ways to learn English.
听英文磁带和看英文电影是学英语的好方法。
2. 形式主语it代替动词-ing形式作主语
*It is no use talking to him—he won’t listen.
跟他谈没有用——他不会听的。
*It is a waste of time talking about such useless things.
谈论这些没用的事情是在浪费时间。
【巧学助记】It is. . . +doing sth. 句式荟萃
(1)It is+adj. +doing sth.
It is/feels funny doing sth.
做某事(感觉)很有趣
It is useless doing sth.
做某事无用
It is worthwhile doing sth.
做某事是值得的
(2)It is a waste of+n. +doing sth.
It’s a waste of time doing sth.
做某事是浪费时间
(3)It is no+ n. +doing sth.
It’s no good/no use/no fun doing sth.
做某事没好处/没用/没意思
二、动词-ing形式的否定形式
动词-ing形式的否定形式通常是在其前加not, 带有逻辑主语时, not应放在逻辑主语和动词-ing形式之间。
*Not knowing how to use a computer makes it more difficult for him to do his academic research.
不知道如何使用电脑使他更难进行学术研究。
*Not having done his homework makes the teacher angry.
未完成他的作业让老师很生气。
三、动词-ing形式的复合结构
动词-ing形式的复合结构由物主代词或人称代词宾格、名词所有格或普通格加动词-ing, 即“sb. /sb. ’s+doing”构成。动词-ing形式的复合结构实际上是给动词-ing形式加了一个逻辑主语。动词-ing形式的复合结构有四种形式:
①形容词性物主代词+动词-ing
②名词所有格+动词-ing
③代词宾格+动词-ing
④名词+动词-ing
*Her coming to help encouraged all of us. 她来帮忙鼓舞了我们所有人。 (=That she came to help encouraged all of us. )
*Mary’s(不可用Mary)being ill made her mother upset.
玛丽病了, 这使她妈妈很着急。
四、动词-ing形式的时态和语态
时态
语态
主动语态
被动语态
一般时
doing
being done
完成时
having done
having been done
*Sometimes being punished may be a good thing.
有时被惩罚可能是一件好事。
*Having been given a toy car as a gift made the boy laugh.
那男孩收到一辆玩具汽车作为礼物, 笑了。
【基础训练】
Ⅰ. 单句语法填空
1. (catch) in a heavy traffic jam is quite an unpleasant experience.
2. It’s your turn (