语法：动词不定式
动词不定式是一种非谓语动词，其结构为“(to) + 动词原形”。
动词不定式的用法:
1. 作宾语
不定式常用作某些动词的宾语, 如want, hope, wish, agree, learn, like, love, offer(表示要)，plan, promi, remember, forget, try(努力), decide(决定), begin, start等。
例如：She wanted to buy a few postcards. 她想买几张明信片。
The car repairer began to check my car. 汽车修理工开始检查我的汽车。
It started to snow at midnight. 半夜里开始下雪了。
在某些动词如know, learn, decide, wonder(想知道)，remember, forget, tell, show, teach等后，还可以接“疑问词 + to学习需要不定式”。
例如：I didn’t know what to say to him. 我不知道对他说什么好。
They are learning how to u the computer. 他们正在学习怎样使用电脑。
Did they tell you where to go? 他们告诉你去哪儿吗？
The farmer showed us how to cut rice. 农民教我们怎样割稻。
● 动词不定式作宾语与动名词作宾语辨析
在动词want, wish, hope, decide, help, promi, plan, manage, agree等后只能用动词不定式作宾语，而在动词dislike, keep, finish, mind(介意)，practice(练习)，enjoy等后只能用动名词作宾语。
例如：We promi to keep our classroom clean all the time. 我们答应始终保持我们的教室清洁。
Ted enjoys growing flowers. 泰德喜欢种花。
Would you mind telling me your address? 你介意把你的地址告诉我吗？
They have all finished reading the passage. 他们都读完了这篇短文。
在like, love, prefer后既能跟动词不定式作宾语也能跟动名词作宾语，但意思上有细微差别，不定式多表示具体的动作，而动名词多指一般的情况，表示泛指。
例如： He would like to listen to pop music for a while. 他想听一会儿流行音乐。
He likes listening to pop music. 他喜欢听流行音乐。
She would love to invite her friends to her hou next Sunday. 冻脚怎么治她想邀请她的朋友下个星期天到她家来。
She loves inviting her friends to her hou on Sundays. 他喜欢星期天邀请她的朋友到她家来。
在begin, start, continue(继续)后既能跟动词不定式作宾语也能跟动名词作宾语，且意义没有差别。
例如：We began to learn / learning English two years ago. 我们两年前开始学习英语。
Let’s continue to play / playing the PC game. 咱们继续玩电脑游戏吧。
remember, forget, mean, go on, stop, try后既能跟动词不定式也能跟动名词，但意义差别很大。
remember to do sth. 记得要做某事
remember doing sth. 记得做过某事
例如： Remember to tell him not to smoke any more. 记得叫他不要再抽烟了。
He still remembered going abroad the first time. 我还记得第一次出国的情景。
forget to do sth. 忘记要做某事
forget doing sth. 忘记做过某事
例如： He forgot to telephone Mike. 他忘了给麦克打电话。
He forgot telephoning Mike this morning. 他忘了今天早晨曾给麦克打过电话了。
mean to do sth. 打算做某事
mean doing sth. 意味着......、意思是......
例如： I meant to go jogging this morning. 我今天早上本打算去慢跑的。
Wasting time means killing life. 浪费时间就意味着浪费生命。
go on to do sth. 继续做另外一件事情（强调事情的转接）
go on doing sth. 继续做未做完的事（强调动作的待续）
例如： Let the children go on telling stories one by one. 让孩子们继续一个一个地讲故事。
After the jazz, the band went on to play墨镜图片 a piece of country music. 在爵士乐之后，乐队接着弹奏了一曲乡村音乐
stop to do sth. 停下来做另一件事
stop doing sth. 停止做某事
例如： They stopped 查余额to have a look. 他们停下来看一看。
They stopped looking out of the windows. 他们不再看窗外了。
try to do sth. 努力做某事、尽力做某事
try doing sth. 尝试着做某事
例如： He tried to do it well. 他努力把这件事做好。
He tried doing it in a new way. 他试着用一种新的方法做这件事。
2. 牛肉柿子作表语
很多很多的近义词to不定式可用于be动词后做表语。
例如：Qu Yuan’s job was to give advice to the king. 屈原的工作是向皇帝进谏。
My wish is to become a college student. 我的愿望是成为一名大学生。
His plan is to t up another book store in the street. 他的计划是在街上再办一家书店。
3. 作状语
作原因状语
They are quite surprid to e the great changes in the area．（不改变句子的意思）
They are quite surprid becau they e the great changes in the area．
He was lucky to arrive before dark．（不改变句子的意思）
He was lucky becau he arrived before dark．
作目的状语
She raid her voice to be heard．（不改变句子的意思）
She raid her voice so that she could heard．
作结果状语
The French football team played successfully enough to defeat the Brazilians．（不改变句子的意思）
The French football team played so successfully that they even defeated the Brazilians．
4. 作定语
被修饰的名词词组是不定式的逻辑宾语
例如： There was really nothing to fear．
He gave me an interesting book to read．
如果不定式是不及物动词，后面就得加相应的介词。
例如： Mary needs a friend to play with．
That girl has nothing to worry about．
They have a strict teacher to listen to．
被修饰的名词词组是不定式的逻辑主语
例如： Have you got a key to unlock the door?溯源
肉手The action to be taken is correct．
There is nothing to be gained by pretending．
5. 作主语
to不定式常用作句子主语，但多数情况下常用it作形式主语，将to不定式后置。
例如：To take part in sports and recreation is important.
