一、动词-ing形式作主语
● 动词-ing形式作主语常用来表示经常性和习惯性的动作。动词-ing形式作主语通常放在句首,谓语用单数形式。例如:Listening to music is my sister’s hobby.
● 动词-ing形式作主语时,为了保持句子平衡,可以用it作形式主语。常用的结构:
1. It is + no use / no good / useless etc.+ v-ing
2. It is + nice / good / interesting / a waste of … etc. + v-ing 例如:
It is no use crying over spilt milk.
二、动词-ing形式作宾语
● 动词-ing形式既可作动词的宾语,又可作介词的宾语。
1. 以下动词或短语只接动词-ing形式作宾语:
admit, avoid, appreciate, consider, enjoy, escape, finish, keep, mind, miss, suggest等动词; can’t stand, give up, feel like, keep on, think of, set about, dream of 等短语。
2. 在下列短语中,to是介词,后面应用动词-ing形式作宾语:
be / get used to, look forward to, devote…to, pay attention to, object to等。
3. 下列动词或短语既可以跟动词-ing形式作宾语,也可以跟不定式作宾语,但意义上有区别:
● like, love, prefer如表示经常性的行为后接动词-ing形式;如表示具体的行为常用动词不定式,但要注意:如果like, love, prefer前有would,后面则接动词不定式。如:Would you like to go shopping with me?
● 下列几组词接动词-ing形式作宾语和不定式作宾语含义不同:
forget doing 忘记已做过某事; forget to do 忘记要做某事
remember doing 记得做过某事; remember to do 记住要做某事
mean doing 意思是,意味着; mean to do 打算做
regret doing 后悔做过某事; regret to do 遗憾要做某事
can’t help doing 禁不住做; can’t help (to) do 不能帮忙做。
● 在allow, permit, advise等动词后直接跟动词-ing形式作宾语,如果这些词后面有名词或代词作宾语,其后要用动词不定式作宾语补足语。如:
We don’t allow smoking in the classroom.
We don’t allow students to smoke.
● 动词need, require, want作“需要”解时,其后用动词-ing的主动形式或不定式的被动形式作宾语,这时动词-ing的主动形式表被动意义。如:
Your coat wants washing. = Your coat wants to be washed.
三、动词-ing的复合结构
动词-ing的复合结构即:物主代词或名词所有格(作宾语时也可以用代词宾格或名词普通格) + 动词-ing。如:
Lucy’s turning up surprised everyone present.
Would you mind my / me using your mobile phone?
四、动词-ing的时态、语态以及否定形式动词-ing有一般式(doing) 和完成式 (having done) 两种时态,一般式的被动语态是being done,完成式的被动语态是having been done。动词-ing的完成式所表示的动作发生在谓语动词的动作之前。
动词-ing的否定形式是在doing之前加not。例如:
I’m sorry for not having told you the news earlier.