To try and fail is better than not to try at all.尝试而失败也比不尝试好。
注意：如果两个不定式表示对照或对比，则不能省略to.
He hasn‘t decided weather to quit or to stay.他还没有决定是去还是留。
To be or not to be， that is a question.是生存还是死亡，这是一个问题。
考点三：有些动词后一般跟带“疑问词+动词不定式”作宾语，如：consider， discover， discuss， explain， guess， know， inquire， observe，
show， teach，
understand， wonder等。
I wonder who to invite.我不知请谁。
Ask my brother where to put the car.问一下我哥车停在哪儿。
（二）关于动名词的考点
考点一：直接接动名词做宾语的动词和词组
admit， avoid， advise， allow， anticipate， appreciate， consider， delay，
deny， dislike， dread，
encourage， endure， enjoy， escape， excuse， fancy， feel like， finish， forbid，
forgive， imagine，
involve， mind， miss， permit， postpone， practise， prevent， propose，
recall， recollect， resent，
resist， risk， stop， give up， can‘t help， can’t stand， suggest
Forbid smoking on trains.火车上禁止吸烟。
We have to postpone sending our answer to the request.
我们不得不暂缓寄出对申请书的答复。
注意：上述动词中allow， advise， forbid， permit， recommend在有人作宾语时，则
后接不定式作宾语补足语。如：allow somebody to do something
I recommended going by subway.我建议坐地铁去。
The doctor recommended me to take a few days‘rest.医生劝我休息几天。
考点二：下列短语中to为介词，后面只能接动名词或名词。
keep to apply to indifference to look forward to with an eye to
amount to commit…to be familiar to stand up to with regard to
take to owe…to be faithful to put one‘s mind to with a view to
turn to resign…to be superior to get down to be opposed to
succeed to attribute…to be sensitive to live up to in relation to
admit to dedicate…to be devoted to owing to aid to
point to limit to be committed to thanks to object to
No woman could succeed to the throne.妇女不能继承王位。
I am looking forward to seeing you again.我盼着再见到你。
考点三：在demand， deserve， need， require， want， worth等词后面接动名词表
示被动的意思，即用主动形式表示被动意义。如果接不定式，必须用不定式的被动形式。
My socks want mending / to be mended.
This grammatical rule deserves mentioning.
That novel is well worth reading.
考点四：在下列it作形式主语或形式宾语的句型中，用动名词作逻辑主语或逻辑宾语。
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