PETS动词不定式用法详解
典范例题
1) ---- I usually go there by train.
---- Why not ___ by boat for a change?
A. to try going B.trying to go C.to try and go D.try going
谜底：D. why not背面接不带to的不定式，因此选D。
2） Paul doesn’t have to be made ___. He always works hard.
A. learn B. to learn C. learned D. learning
谜底：B. make后接不带to的动词不定式，当其用于主动时，to不可省略。
10、动词不定式的否定式
Tell him not to shut the window…
She pretended not to see me when I passed by.我走过的时候，她冒充没瞥见。
典范例题
1）Tell him ___ the window.
A. to shut not B. not to shut C. to not shut
D. not shut
谜底：B。 tell sb to do sth的否定形式为tell sb not to do sth.
2)She pretended ___ me when I passed by.
A.not to see B. not seeingC. to not see
D.having not seen
谜底：A。 pretend后应接不定式。其否定形式为pretend not to do sth.。
3）Mrs. Smith warned her daughter ___ after drinking.
A. never to drive B. to never driver
C. never driving D. never drive
谜底：A。warn sb to do sth.的否定形式为warn sb not to do sth.此处用的能否定词never.
4) The boy wanted to ride his bicycle in the street，but his mother told him ____.
A. not toB. not to doC. not do it
D. do not to
谜底：A。not to为not to do it的省略形式。可以只用to这个词，而不用频频整个不定式词组。及物动词do后应著名词、代词等，不然不对，因此B，D不对。
5) The patient was warned ___ oily food after the operation.
A. to eat no B. eating not C. not to eat
D. not eating
谜底：C。warn一词要求后用不定式，此处为不定式的主动，否定形式为be warned not to do。
11、不定式的特别句型too…to…
1）too…to太…以致于…
He is too excited to speak.
他太冲动了，说不出话来。
---- Can I help you ?需要我帮助吗?
---- Well, I’m afraid the box is too heavy for you to carry it, but thank you all the same.不用了。这箱子太重，生怕你搬不动。感谢您。
2)如在too前有否定词，则整个句子用否定词表达一定， too后谁人词表达一种委婉含义，意为"不太"。
It’s never too late to mend.(谚语)
改过不嫌晚。
3)当too背面有only, all, but时，意思是：极度…等于very。
I’m only too pleased to be able to help you.我极度愉快能匡助你。
He was but too eager to get home.他极度想回家。
12、不定式的特别句型so as to
1）默示目标；它的否定式是so as not to do。
Tom kept quiet about the accident so as not to lose his job.
汤姆对事变连结缄默是为了不丢失落他的义务。
Go in quietly so as not to wake the baby.
轻点进往，别惊醒了婴儿。
2)so kind as to ---劳驾
Would you be so kind as to tell me the time?
劳驾，现在几点了。
13、不定式的特别句型Why not
"Why not +动词底细"表达向某人提出发起，翻译为："为什么不……?" "干吗不……?"
例如：
Why not take a holiday?
干吗不往度假?
14、不定式的时态和语态
时态语态主动主动
通俗式 to doto be done
举行式 to be doing
完成式 to have done to have been done
完成举行式 to have been doing
1)现在时：通俗现在时默示的动词，偶尔与谓语动词默示的举措同时发作，偶尔发作在谓语动词的举措之后。
He seems to know this.
I hope to see you again. = I hope that I’ll see you again.我希看再会到你。
2)完成时：默示的举措发作在谓语动词默示的举措之前。
I’m sorry to have given you so much trouble.
He seems to have caught a cold.
3)举行时：默示举措正在举行，与谓语动词默示的举措同时发作。
He seems to be eating something.
4)完成举行时：
She is known to have been wreaking on the problem for many years.
15、动名词与不定式
1）动名词与不定式的区别：
动名词表达的是：状况，性质，心境，笼统，常常性，已发作的
不定式表达的是：目标，功效，缘故原因，详细，一次性，将发作的
2）接不定式或动名词，意义相通。
3）动名词与不定式语义不合的有11组：
1stop to dostop doing
2 forget to do forget doing
3remember to doremember doing
4 regret to do regret doing
5cease to do cease doing
6 try to dotry doing
7go on to do go on doing
8 afraid to do afraid doing
9interested to dointerested doing
10 mean to do mean doing
11 begin/ start to do begin/ start doing
关键字：动词不定式的用法 动词不定式用法 动词不定式 不定式的用法 英语动词不定式