一、习惯于做某事的表达方法 used to do 过去常常做某事 be used to doing 习惯于做某事be used to do sth被用来做某事
1. used to的一般疑问句有两种构成方法:
1)将used提前至句首,结构为:Used + 主语 + to do sth...? 2)将did提前至句首,结构为:
Did + 主语 + use to do sth...?
例如:Used he to get up early? = Did he use to get up early?
2. used to的反义疑问句有两种构成方法,
例如: 1)He used to smoke,didn't he?
2)They usedn't to like opera,did they?
3. 同样,其否定句也有两种构成方式:
1)直接在used后面加上not,也可一起缩写成usedn't.
结构为:主语 + used not to do sth... 或主语 + usedn't to do sth...
2)借助于助动词didn't,其结构为: 主语 + didn't use to do sth.... 例如:He used not to get up early. = He usedn't to get up early.= He didn't use to get up early.
一、be(get,become)used to结构在意义上相当于accustomed to“习惯于”,从形态上看,used是个分词型形容词,to是介词,因此后面只能跟名词、代词或动名词。例如:
1)They got used to living in the countryside.他们已习惯于住在农村。
2)I've got used to being a vegetarian.我已经习惯吃素食。
3)He is used to hard work.他习惯于艰苦工作
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