动词不定式
①动宾关系：
I have a meeting to attend
注意：不定式为不及物动词时，所修饰的名词如果是地点、工具等，应有必要的介词，如：
He found a good house to live in.
The child has nothing to worry about.
如果不定式修饰time， place， way，可以省略介词：
He has no place to live.
This is the best way to work out this problem.
如果不定式所修饰名词是不定式动作承受者，不定式可用主动式也可用被动式：
Have you got anything to send？ Have you got anything to be sent？
②说明所修饰名词的内容：
We have made a plan to finish the work.
③被修饰名词是不定式逻辑主语：
He is the first to get here.
(1)接不定式或动名词在意思上有区别的动词：
fmean to do想要(做某事)propose to do打算(做某事)
mean doing意味(做某事)propose doing建议(做某事)
forget to do忘记(要做的事)remember to do记得(要做某事)
forget doing忘记(已做的事)remember doing记得(已做过的事)
regret to do(对将要做的事)遗憾go on to do继而(做另一件事)
regret doing(对已做过的事)后悔go on doing继续(做原来的事)
fstop to do停下来去做另一件事
stop doing停止正在做的事
(2)下列动词短语中的to是介词，后面应接动名词或名词：
object to，resort to，react to，contribute to，look forward to，be accustomed to，be committed to.be exposed to，be subjected to，be devoted to，be dedicated to，be opposed to，be reconciled to，be contrary to
1. 分词作定语
1) 分词作定语既可以放在所修饰的词之前，作前置定语，也可以放在所修饰的词后面，作后置定语。其作用相当于一个定语从句。例如：
Where are the reserved seats？ (=Where are the seats which have been reserved？)
预定的座位在哪里？
This is a pressing problem. (=This is a problem which is pressing.)
这是一个紧迫的问题。
2) 分词作后置定语可分为限制性(紧跟在所修饰的中心词之后)和非限制性(用逗号与其所修饰的中心词分开)两种，其作用分别相当于一个限制性定语从句和非限制性定语从句。
例如：
The funds raised (= which have been raised) are mainly used for helping the homeless.
筹集的资金主要用来帮助那些无家可归的人。
There are many students waiting (= who are waiting) to get examined.
有许多学生在等待检查
This book， written (= which is written) in simple English， is suitable for beginners.
本书是用浅显的英语写的，适合初学者。