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used to 与 used to be 的区别用法

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used to 与 used to be 的区别用法
1.used to do sth.过去常常做某事,(意思现在不做了)
例:I used to get up early and take an hour's walk before breakfast.
我过去常常起床很早并且在早餐前散步一小时.
2.be used to doing sth / be used to sth .是指习惯于做某事.(这里的to 是介词.)
例:She isn’t used to living in the countryside now.
她不习惯在乡下生活.
Are you used to the food here?
你习惯吃这儿的饭菜吗?
3.be used to do sth.被用来做某事
例:Computers are used to do many things for people now.
现在计算机被用来做许多事情.
再问: 什么情况下 used to 后要由be
再答: used to be后面接一种状态,过去常常 怎么样 常加形容词 he used to be angry 他过去常常生气