不定式和不定式短语用法上有区别吗?不定式（to+动词原形,之后不带任何成分）可以做宾语?不定式（to+动词原形,之后不带任何成分）可以做主语,宾语,表语,宾补,定语,请各举一例!

不定式和不定式短语用法上有区别吗?不定式（to+动词原形,之后不带任何成分）可以做宾语?不定式（to+动词原形,之后不带任何成分）可以做主语,宾语,表语,宾补,定语,请各举一例!
不定式和不定式短语用法上有区别吗?不定式（to+动词原形,之后不带任何成分）可以做宾语?
不定式（to+动词原形,之后不带任何成分）可以做主语,宾语,表语,宾补,定语,请各举一例!

不定式和不定式短语用法上有区别吗?不定式（to+动词原形,之后不带任何成分）可以做宾语?不定式（to+动词原形,之后不带任何成分）可以做主语,宾语,表语,宾补,定语,请各举一例!
先回答你区别.其实这个很明显的.看下字面的意思就能明白了.
不定式（to+动词原形,之后不带任何成分）可以做,主语,表语：To see is to believe.眼见为实.
作宾语：
如：I can afford to buy a house.类似的词语还有afford,appear,agree,ask,believe,decide,demand,desire,fail,hope,intend,learn,mean,offer,promise,refuse,wish等.
不定式作定语
　　不定式作定语相当于一个定语从句,它修饰以下几类名词：
　　⑴由动词派生或转化而来的名词,它们所对应的动词通常有不定式作宾语.这类名词主要有：attempt,claim,decision,plan,promise,intention,need,resolution,tendency,wish,failure,threat等.
　　Another attempt to climb the mountain will be made next month.
In his speech he expressed his determination to achieve the goal.
　　⑵由可能与不定式搭配的形容词派生出来的名词.这类名词主要有：anxiety,patience,ability,willingness,ambition等.
　　Her eagerness to learn a foreign language obvious.
　　⑶不定式作定语还可用来修饰代词something,anything,everything,nothing.不定式做后置定语.
Do you have anything to send?你有什么东西要寄吗?（不定式to send的动作执行者是you）
Do you have anything to be sent?你有什么要（我或别人）寄的东西吗?不定式to be sent的动作执行者是已被省略的me或someone else）
She has everything to lose and nothing to gain.
⑷由only,last,next,序数词或形容词最高级修饰的名词后常用不定式作定语.
Jim is the only student to answer the question correctly in his class.
You are the last to undertake the blood test.
⑸不定式常作为定语修饰there be结构的真实主语.在there be结构中,用来修饰主语的不定式有时用主动形式,有时用被动形式.当说话人考虑的是必须有人完成某件事时,不定式用主动形式.如果说话人强调的是事情本身必须被完成时,不定式则用被动形式.例如：
There is a lot of work to do.（Somebody has to do the work.）
There is a lot of work to be done.（The work has to be done.）
不定式作状语
　　不定式作状语相当于一个状语从句,表示形为的目的、结果或原因.
　　⑴表示目的.在这种情况下,不定式的逻辑主语通常也是全句的主语.
　　He stayed there to see what would happen.
在强调不定式目的状语时,不定式前可加in order,so as等.如：
　　She asked me to drive her to the airport in order to catch the 5：00 plane.
He moved the TV set to the meeting-room so as to let everyone watch it.
　　⑵用so……as to……,such （……） as to……,enough to……,too……to,only to等表示结果,如：
　　Have you got enough room to seat all of us?
　　She is too weak to join us in the outing.
　　⑶将不定式移到句首表示条件,如：
　　To hear the teacher better,you have to sit in the front.= If you are to hear the teacher better,……
　　⑷与形容词连用时,大多表示原因.这些形容词主要有：happy,kind,surprised,frightened,angry,shocked,glad,delighted,grieved,disappointed等.
　　They were surprised to be informed of the news.I‘m glad to hear this.
另外,

不带to 的不定式
1.表示感觉的动词
五看see,notice,watch,observe,look at 三使have,let,make 二听hear,listen to 一感觉feel
　　He noticed the man enter the room.　　他注意到有人进屋了.
　　They observed her do the experiment.　　他们观察她做实验了.
2.help后的不定式可以带to也可以不带to.
　　Can you help me （to） clean up after the meal?　　饭后你能帮我洗碗吗?
3.有些类似于情态动词的词语（如rather than,had better,would rather,might as well等）之后,不定式不带to.如：
　　We might as well go without him.　　我们可以不让他跟去.
　　You‘d better go now.　　你最好现在走.
4.不定式用在介词but,except,besides后时,如果这些介词前有行为动词do的各种形式,那么介词后的不定式不带to,相反则带to.
(1).She could do nothing but cry.
(2).I have no choice but to go.
(3).What do you like to do besides sleep
以上,部分参考教育资源网.
希望对你有用.

不定式定义：由to+动词原形构成。不定式是一种非限定性动词。而非限定动词是指那些在句中不能单独充当谓语的动词，可分为不定式，动名词，现在分词和过去分词。“动词不定式”由动词+不定式构成。动词不定式在句中可以作句子除谓语之外的任何句子成分。动词不定式的被动形式除了一般形式外还有其完成式和进行式。
一、作主语
To get there by bike will take us half...

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不定式定义：由to+动词原形构成。不定式是一种非限定性动词。而非限定动词是指那些在句中不能单独充当谓语的动词，可分为不定式，动名词，现在分词和过去分词。“动词不定式”由动词+不定式构成。动词不定式在句中可以作句子除谓语之外的任何句子成分。动词不定式的被动形式除了一般形式外还有其完成式和进行式。
一、作主语
To get there by bike will take us half an hour.
二、作宾语
The driver failed to see the other car in time.
　　司机没能及时看见另一辆车。
三、作补语
a.　Father will not allow us to play on the street.　
　　父亲不让我们在街上玩耍。
　　b.　We believe him to be guilty.
　　我们相信他是有罪的。
四、作表语
　　不定式作表语表示具体动作或将来动作；动名词作表语表示抽象的一般行为。
　　①To be kind to the enemy is to be cruel to the people.
五、作状语
　　（1）目的状语　
　　To… only to (仅仅为了),　in order to,　so as to,　so(such)… as to… (如此……以便……)
　　He ran so fast as to catch the first bus.　他飞快地跑以便赶上第一班车。
六、作定语
①The next train to arrive is from Washington.

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动词不定式是只to + 动词原形，不定式单独使用的并不是很多，动词不定式常常与其宾语或（和）状语构成不定式短语，两者语法功能完全相同。
1. As a nurse , It is her duty to look after sick people .
2. When he was young , he wanted to become an astronomer .
3...

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动词不定式是只to + 动词原形，不定式单独使用的并不是很多，动词不定式常常与其宾语或（和）状语构成不定式短语，两者语法功能完全相同。
1. As a nurse , It is her duty to look after sick people .
2. When he was young , he wanted to become an astronomer .
3. Her duty is to look after the sick .
4. Our teacher told us not to play football on the street .
5. She expressed her hope to visit us soon .
6. He handed his homework to confirm his arrival .

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