能直接跟不定式作宾语的动词
有want/like/hope/wish/prefer/hate/decide/expect/desire/
try/manage/start/begin/remember/forget/ask/offer/
continue/agree/choose/pro-mise/mean/pretend 等
常使用 it 作为形式宾语，不定式作真正主语放后面
I find it interesting to study English.
作表语
也就是放在连系动词（主要有 be 动词 am/ is/ are、感官动词
look/ hear/ smell/ taste/ feel、表示保持和变化的动词 stay/
keep/ remain/ become/ turn/ grow/ get 以及 seem 等）的后
面。
eg: Her wish is to become a doctor.
She doesn’t seem to like the idea.
作定语 动宾关系
eg: Here are some books (for you to read).
She has a sick baby (to take care of).
Have you got anything to say? Vt.或短语动词（Vi.+介
词）
The nurse has five children to look after.
She was the first person to think of the idea.
作状语
1. 作目的状语
eg: To catch the first bus, I have to get up early.
He went home to see his parents.
She uses a computer to write an article.
另外不定式作目的状语常用 so as to(只能放句中) / in order
to
