used to + 动词原形
过去的习惯或状态，现在已经不是这样了：“以前常常……”“以前是……”。
例句
- I used to swim in the river.我以前常常在河里游泳。
- There used to be a cinema here.这里以前有一家电影院。
- I didn't use to like coffee.我以前不喜欢咖啡。
讲解
学会以后，你能
- 说“我以前常常……（现在不了）”
- 说“这里以前有……”“他以前很……”
- 问别人“你以前……吗？”
构成
used to + 动词原形
所有主语都一样，没有 uses to。
I used to swim in the river.
我以前常常在河里游泳。
He used to be thin.
他以前很瘦。
There used to be a cinema here.
这里以前有一家电影院。
否定
didn't use to
did 已经表示过去，所以 use 不加 -d。
I didn't use to like coffee.
我以前不喜欢咖啡。
也可以说：I never used to like coffee.
疑问
Did … use to …?
Did you use to live in Shanghai?
你以前住在上海吗？
Where did you use to live?
你以前住在哪里？
别和 be used to + 动词-ing 混淆 —— 意思完全不同
used to + 动词原形 = 以前常常（现在不了）
be used to + 动词-ing = 习惯于（现在已经习惯）
I used to get up early.
我以前常常早起。
I'm used to getting up early.
我已经习惯早起了。
常见错误
I use to play basketball every day.I usually play basketball every day.
used to 只说过去；现在的习惯用 usually。
I didn't used to like coffee.I didn't use to like coffee.
did 后面用原形 use。
I used to playing football.I used to play football.
used to 后面接动词原形。
He used to live in Beijing for ten years.He lived in Beijing for ten years.
说明具体持续多久，用一般过去时，不用 used to。
练习要点
1. used to + 动词原形
过去的习惯或状态，现在已经不是这样。
- I used to swim in the river.我以前常常在河里游泳。
- He used to be thin.他以前很瘦。
2. 否定 didn't use to
否定用 didn't use to（use 不加 -d），也可以说 never used to。
- I didn't use to like coffee.我以前不喜欢咖啡。
- She didn't use to eat meat.她以前不吃肉。
3. 疑问 Did … use to …?
疑问句：Did + 主语 + use to + 动词原形？
- Did you use to live in Shanghai?你以前住在上海吗？
- Where did you use to live?你以前住在哪里？
练到脱口而出
围绕这 3 个要点的小练习，每答一题立刻批改。免费开始。