Question

—How do you go to school every day?
—I ____ , but I ____ by bike a year ago.

A．go to school by foot; went

B．would go to school on foot; liked to go

C．walk; used to go

D．will walk to go school; was used to going

Answer 1

C

試題分析：根據語境可知此句的含義我現在是走著去上學，而以前是騎自行車去上學。考查的是固定句型結構used to do sth表示過去常常做某事，現在不做了�，F在經常做的事情要用一般現在時，故選C。
點評：固定句型結構be used to doing sth、used to do sth 、be used as和be used for doing sth是四個容易混淆的知識點。要注意他們的區別和意義。be used to doing sth是習慣做某事，used to do sth表示過去常常做某事，現在不做了。be used as是把…用作…be used for doing sth表示被用來做某事。