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

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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: 1used提前至句首,结构为:Used + 主语 + to do sth...? 2did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: 1He used to smokedidn't he 2They usedn't to like operadid 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 + 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: + didn't use to do sth.... 例如:He used not to get up early. = Heusedn't to get up early. = He didn't use to get up early. 4begetbecomeused 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: 1They got used to living in the countryside他们已习惯于住在农村。 2I've got used to being a vegetarian.我已经习惯吃素食。 3He is used to hard work.他习惯于艰苦工作。 5be used to表示“习惯于某事”的状态,而get used to则表示由“不习惯”“习惯于”这一动态的过程,意思是:(变得)习惯于”“开始习惯于”试比较: He was used to the cold weather after he lived there for two years 在那里住两年后,他已习惯了寒冷的天气。 I think it is a bit difficult for you to get used to the humid weather here 我想,让你习惯于这里潮湿而炎热的天气有点困难。 You'll soon get used to living in the country 快你就会习惯于住在乡下了。 6、当主语是物的时候是指被用来做某事,be used to是动use的被动语态,在这种结构里,to是不定式符号。例如: A metal bar was used to force the door open 用金属棒把门撬开。 The threshing ground was used to hold a mass meeting 打谷场曾用于举行群众大会。


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