动词不定式在句中的成分
1， 作主语：
To read English aloud is very important 大声朗读英语是很重要的
It's very important to read English aloud 大声朗读英语是很重要的。
2， 作宾语：
I want to play football 我想要踢足球。
I find it easy to study English 我发现学习英语是很容易的。
3， 作表语：
My plan is to study English well 我的计划就是把英语学好。
4， 作定语：
I must find a man to talk 我必须找到一个人去聊天
I have nothing to do 我没有可以做的事情。
5，作状语；
We did a lot of work just to improve our abilities
我们做这么多的工作就是为了提高我们的能力。
He got up early that day ， only to be told that it's Saturday
5， 作补语：
He asked me to do homework 他叫我去写作业
He was asked to finish the work 他被叫去完成这个工作。
二，疑问词 不定式的句子成分
1， 做主语： How to study English well is so important 如何把英语学好是很重要的。
2， 做表语：My question is how to find it 我的问题就是如何找到它。
3， 做宾语：If you want to know what to eat，you must have a menu 如果你想要知道吃什么？你必须有一个菜单。
He is worrying about where to go 他正在担心去哪里
不定式的几种时态形式
You seems to play football well
你好像踢足球还不错（状态）
You seems to be playing football very happily on the playground
你好像正在操场上打球很开心哦（动作）
You seems to have played football for two hours
你好像已经踢足球已经两个小时了。（影响）
不定式的语态：
主动： It is great for me to play football every day 每天踢足球对我来说是很好的
被动： It's great for me to be invited at your party 对我来说是很好的在你的聚会上被邀请。
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