动词不定式To do that sort of thing is foolish
I want to see you this evening
All you have to do is to finish it quickly
We found a house to live in
She came here to study English
I warned the patient not to eat cold water after the operation
主语 宾语表语 定语 状语 宾补作主语To master a foreign language is really important nowadays
To give up smoking is right
当今掌握一门外语真的很重要
放弃吸烟是对的
作宾语Fred didn’t have any money, so he decided to look for a job
He promised not to tell anyone about it
Fred 没有钱,所以他决定找一份工作
他答应不告述任何人这事
作表语My job is to teach English
To see is to believe
我的工作是教英语
作定语Do you have anything to say
你有什么要说的吗
Betty 是第一个知道这真相的人 Betty was the first to know the truth作状语He spoke loudly (so as / in order) to be heard
They jumped with joy to hear the news
I’m too tired to walk any