Page 32 - 高中英语小题狂做·必修第三册·RJ

10 高中英语小题狂做·必修第三册·RJ

符号 to 要省略。

We had better get the task accomplished as early as possible.

Why not turn it into a game instead?
②动词不定式短语作介词 but、except 的宾语,且介词之前有实义动词 do 或 do 的其他形式时,不定式符号 to 通常

省略。

What do you like to do except swim?

My mother could do nothing but wait for the doctor to arrive.
③两个或多个动词不定式短语表示并列关系时,第二个及后面的不定式短语中的不定式符号 to 通常省略。 如果两

个或多个动词不定式短语表示对比关系,则不定式符号 to 通常保留。

She told the child to stay there and wait till she came back.

They didn t tell me whether to go on or to stop.

④在某些感官动词或使役动词(如 hear、listen to、notice、observe、see、watch、make 等)之后充当宾语补足语的动词不
定式中,不定式符号 to 要省略。 但在被动语态的句子中,不定式符号 to 要保留,此时不定式作主语补足语。

The manager made the workers work day and night.

The workers were made to work day and night by the manager.
⑤当 what 引导的名词性从句作主语,或 all、everything 等后接定语从句作主语,且从句谓语部分含有动词 do 的某种

形式时,作表语的动词不定式中的 to 可以省略也可以保留。

What I should have done is (to) set the bird free.

All that I can do is (to) admit the mistake and correct it.
⑥help 后作宾补的动词不定式可带 to,也可省略 to。

Would you please help me (to) carry the luggage?
(2) 不定式符号后动词的省略

①当 hope、wish、want、like、love、decide、plan、mean、prefer 等动词后面出现与上文相同的不定式时,常保留不定式符号
to,而省略其他部分。

Mike lied to us but he did not want to.

I m very sorry to have hurt you, but I didn t mean to.
②当不定式在 ask、advise、persuade、wish、allow、permit、tell、expect、force、invite、beg 等动词后面充当宾语补足语时,为
了避免重复,常保留不定式符号 to,而省略后面的动词。

She wants to come but her parents won t allow her to.

If he doesn t want to play the piano, don t force him to.

③在特定的上下文中,如果不定式为一般式 to be 或完成式 to have done,通常省略 be 或 have 之后的部分。

—Aren t you the headmaster?

—No, and I don t want to be.
【学法点拨】
①形容词 happy、glad、eager、anxious、willing、ready、pleased、afraid 等后面接动词不定式时,可以省略不定式符号 to 后
的动词。

—Will you go for a walk?

—I m glad to.

②so 和 not 可用来代替上下文或问句中的一部分或整个句子。

—Can you put it off?

—I m afraid not / so.