一道有关被动语态的英语选择题~

问题描述:

一道有关被动语态的英语选择题~
Our classroom-____everyday and ____clean and tidy.
A is cleaned; kept
B is cleaned; keeps

选B.
is cleaned没有疑问了吧?关键是第二个空.
keep用来表示“被保持”的时候,虽然是被动语态,但是看作系动词(省略be动词,用动词原形).形式为:keep+adj/adv/prep phrase.
可参见: