Question

Dr. Ma used to __________in a hospital.

A．work

B．works

C．worked

D．working

Answer 1

A

試題分析:此題考查的重點(diǎn)是used to do sth表示過(guò)去經(jīng)常做某事,故選A表示馬先生過(guò)去在醫(yī)院里工作.
點(diǎn)評(píng)：used to do sth表示過(guò)去常常做某事,其否定式和一般疑問(wèn)句的形式有時(shí)要借助助動(dòng)詞do的形式,構(gòu)成didn’t use  to  do sth和did …use to do sth的結(jié)構(gòu)。還要區(qū)分與be used to doing sth的區(qū)別。