高中英语语法之动名词
一、含义
动名词兼有动词和名词特征的非谓语动词形式。基本形式为v-ing, 动名词具有名词的性质,因此在句中可以做主语、表语、宾语、定语等。
动名词有时态和语态的变化。
动名词的时态和语态的基本形式:(以write为例)
时态 语态 | 一般时 | 完成时 |
主动语态 | writing | having written |
被动语态 | being written | having been written |
join的四种用法 |
注意:动名词的否定形式是:not writing
二、动名词的基本用法
1.用作主语---常表抽象,或者泛指习惯性的动作。
Smoking is bad for your health.
Playing with fire is dangerous.
Swimming is her favorite sport. 游泳是她最喜欢的体育运动。
Learning is important to modern life. 学习对现代生活很重要。
注意:
① 不定式也可以做主语。不定式与动名词作主语的区别:
不定式作主语时经常表示具体的、一次性动作,而动名词作主语时经常表示抽象动作或习惯性动作。
Getting up early is a good habit.
To get up early this morning made me sleepy.
② 动名词作主语,有时用it作形式主语,把动名词置于句末。
It is no use/ good doing...(做。。。没有用);
It is fun doing... (做。。。很有趣);
It is a waste of time doing... (做。。。是浪费时间) 等句型中。
例如:It’s no use crying over spilt milk.(覆水难收)
It is fun playing with children. 和孩子们一起玩真好。
It is a waste of time persuading such a person to join us.
说服这样一个人加入我们当中来是浪费时间。
2. 作宾语
① 作某些及物动词的宾语
常见的动词有:advise,avoid,delay,escape,excuse,enjoy,consider,finish,deny,fancy,keep,mind(在乎)postpone,pardon,practise,suggest,imagine等。
need,want,require后接动名词,表示被动意义。
如: Would you mind opening the door?请你把门打开好吗?
Fancy meeting you here. 真想不到在这里遇见你。
② 作介词的宾语
He left without saying good-bye to us. 他没有和我们道别就离开了。
On arriving at the airport,I saw my mother standing in the crowd,waving to me.
一到机场,我就看见我母亲站在人中,向我招手。
③ 作某些词组的宾语
常见的词组有:
give up,go on,put off,can't help,can't stand,be worth,be devoted to,be accustomed to,be used to,object to; insist on,look forward to,be sure of,be keen on,be fond of,be good at,be tired of,be interested in,be afraid of, cannot help 情不自禁 be tired of 厌烦做某事 insist on 坚持 depend on/upon 指望,依赖 set about着手做get down to着手做 feel like 想要 lead to 导致等。pay attention to
例: I'm looking forward to having the summer holiday in Kun-ming.
我盼望去昆明度暑假。
He gave up smoking several months ago. 几个月前,他戒烟了。
④ 某些词组后接动名词作宾语时,可省略词组中的介词。常见的词组如下:
He spends hours(in)reading newspapers everyday. 他每天花数小时阅读报纸。
We mustn't waste time(in)arguing.我们不能浪费时间争论。
The young doctor lacks experience(in)doing such kind of operation.
那年轻的医生在动这种手术上缺乏经验。
We must stop/prevent the teens (from) smoking.
我们必须阻止这些十多岁的孩子吸烟。
We had a hard time(in)finding jobs. 我们一度工作得很苦。
They earn a living(by)doing housework for other families.
他们为别的家庭做家务来谋生计。
他们讲英语(没)有困难。
注意:
⑤ 不定式也可以做宾语
I want to study English.
I hope to have a chance to go abroad.
⑥ 有些动词后即可加动名词也可加不定式,区别不大
★在begin,start,continue后接动名词和不定式都可以,一般情况下意义相同。
如:去年他们开始打篮球。
但如果碰到以下情况,begin和start后须用动词不定式:
(a)主语是物:
The milk began to boil. 牛奶开始煮沸了。
(b)后接心理活动或状态的动词:
They began to know the danger ahead of them. 他们开始意识到他们有危险。
(c)begin和start用于进行时态:
They were starting to have dinner when 1 went in. 我进去时他们刚要吃饭。
(d)后接被动式:
The TV tower started to be built several years ago. 电视塔是在几年前开始建造的。
★ 在need,want,require后接动名词和动词不定式的被动式,意义相同,都表示被动,表示需要被……的意思。如:
这电视机需要修理。
这小孩需要照顾。
这台洗衣机需要检查。
★ 在hate,like,love,prefer后可接动名词,也可接不定式,但意义不同,接动名词表示经常发生的动作,而接动词不定式则表示某一具体的动作。如:
★在remember,forget,regret后接动名词表示已做过的事,而接动词不定式表示动作还未发生。如:
★ mean,try,go on,stop后接动名词和动词不定式,意义完全不同:
Mean doing意味着……
例如:His breaking the arm meant his doing things carelessly.
他摔坏了手臂意味着他做事粗心。
mean to do打算做……
例如:I meant to say I was sorry. 我想说声对不起。
try doing试试看(用某种方法)
例如:If you can't work out the problem this way,try doing it in that way.
如你用这种方法做不出这道题,试用那种方法。
try to do设法、试图
例如:I'm trying to open the door,but I don't think I can.
我正设法打开门,但我想我是徒劳的。
go on doing继续干某事
例如:He was reading when he beard the door bell. He opened the door and went on reading. 他在看书时听到门铃响。他开了门又继续看书。
go on to do接着又去干另外一件事。
例如:
When he finished doing his homework,he went on to practise playing the piano. 他做完作业后,接着又练习弹钢琴了。
stop doing sth. 停止做某事。
例如:
Would you please stop talking?Let's listen to the story.
请你们停止说话,我们来听故事。
stop to do sth. 停下来去做某事。如:
例如:I'm tired. I want to stop to have a rest. 我很累。我想停下来休息一会。
3. 作表语
动名词作表语时句子主语常是表示无生命的事物的名词或what引导的名词性从句。表语动名词与主语通常是对等的关系,表示主语的内容,主语、表语可互换位置。
Your task is cleaning the windows. 你的任务就是擦窗户。
(Cleaning the windows is your task.)
What I hate most is being laughed at. 我最痛恨的就是被别人嘲笑。
(Being laughed at is what I hate most.)
Teaching is my job.= My job is teaching. 我的工作是教书。
★ 动名词作表语的时候,特别要注意:不要与正在进行时混淆。动名词作表语,表达的是“某件事”等。例如:
his part-time job is promoting new products for the company. (动名词)
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