过去习惯性的行为或重复的动作(常用used to + V表示)
I went jogging every morning. 我过去每天早上都慢跑。
= I used to go jogging every morning.
I swam every day when I was young. 我年轻的时候每天游泳。
= I used to swim every day when I was young.
We often played tennis together. 我们过去常一起打网球。
=We used to play tennis together.
He is not what he was. 他不再是他过去的样子了。
= He is not what he used to be.
There was a movie house there. 那里从前有一家电影院。
= There used to be a movie house there.
I used to like fish, but now I don't.
He doesn't work here now, but he used to.
My father doesn't smoke as much as he used to.