大学英语：used to 表示过去经常的活动或方式、习惯

33.used to 表示过去经常的活动或方式、习惯

She used to dislike speaking in public,but now she quite enjoys it.

We used to have a blue sky and clear water,but all this is gone now.

其否定式为used not/usedn’t/didn’t use to,但used not最普通。

She used not to get up early on Sundays but now,since she has changed her job,she has to.

I used not to go to work by car.I rode a bike,which was good exercise.

其疑问式最自然的形式是 did you used to/did he use to 另一种形式 used you/used they/used he 不如前一种。

Did you use to know him?You seem to understand him very well.

Didn’t there use to be a lot of trees behind the house?

注意：used to与be/get used to的区别。be/get used to表示“习惯于……”，它可以有各种时态形式。

I’m used to hard work and heat and that’s why I can work in India.

When you are in London,you must get used to driving on the left.