Question

The Greens used to live in London and now they ________ in Beijing.

A. used to live    B. are used to live    C. are used to living

Answer

C

【解析】句意：格林一家过去住在伦敦，现在他们已习惯于住在北京。考查动词短语辨析。be used to sth习惯于某事；used to do sth过去常常做某事； sth be used to do sth某物被用来做某事。根据句意和语境可知“格林一家习惯于住在北京了”，选C。

点睛：一、used to do sth.：过去常常做某事，曾经做某事； 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.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. 二、be（get，become）used to doing sth./sth.意思是习惯于…，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。三、sth. be used to do sth.某物指被用来做某事，是动词use的被动语态，在这种结构里，to是不定式符号。例如：Tooth brushes are used to brush teeth.