used-to-do-过去常常做某事--be-used-to-doing-习惯于做某事-be-use

used to do 过去常常做某事 be used to doing 习惯于做某事 be used to Good is good, but better carries it.精益求精，善益求善。do sth 被用来做某事 1(5 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 + 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. = Heusedn't to get up early. = He didn't use to get up early. 4、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。 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”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． 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 used to 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 mass meeting． 打谷场曾用于进行群众大会。|*`【|&'：%、`…};￥$^。…;）/[：￥：:@?，