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1、-第 1 页-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+useto 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,didnt he?2)They usednt to
2、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usednt.结构为:主语+used not to do sth.或 主-第 2 页-语+usednt to do sth.2)借助于助动词 didnt,其结构为:主语+didnt use to do sth.例如:He used not to get up early.=He usednt to get up early.=He didnt use to get up early.4、be(get,become)used to 结构在意义上相当于 accustom
3、ed 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)Theygotusedtolivinginthecountryside他们已习惯于住在农村。2)Ive 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。5、be used to 表示“习惯于某事”的状态,而get used to 则表示由“不习惯”到“习惯于”-第 3 页-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 co
4、ld weather after he livedthere 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 getused 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。Youllsoongetusedtolivinginthecountry很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 usedto 是动词 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 massmeeting-第 4 页-打谷场曾用于举行群众大会。