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in the past
now
Re Ba has long hair now. But she had
short hair in the past.
Re Ba used to _____, but now____.
in the past
now
How about Amy now ?
Amy used to …
I used to be short
I didn’t use to be popular in school.
Paula used to be really quiet.
She didn’t use to like tests.
You used to be short, didn’t you?
Yes, I did./No, I didn’t.
Did he use to wear glasses?
Yes, he did./No, he didn’t.
Grammar Focus
used to意为“______”，用于表示过去习惯性的动作或存在的状态（强调与现在的对比，暗示现在不做了）。其中to为不定式符号，后跟动词____。used to只用于_______时态，没有人称和数的变化。
一、used to的用法
过去常常
原形
一般过去
主语＋ used to ＋动词原形...
肯定句式
She used to work in a shop.
He used to watch a lot of TV.
He didn't use to watch a lot of TV.
She didn't use to work in a shop.
否定句式