请帮忙讲解几道英语被动语态的习题

题目

请帮忙讲解几道英语被动语态的习题
Great changes___ in the past ten years in China.
A.took place B.have taken place C.were taking place D.had taken place
You can't use the computer,it____.
A.was broken down B.is wrong C.is bad D.has broken down
Lookout,please keep away from the fire,or your trousers will__
A.burnt B.burn C.burning D.get burn

答案

1.B take place在此处应理解为“发生”,句中时间状语是 in+时间段,表明此处应为完成时,结合语境理解,中国在过去十年中发生了巨大的变化,变化时现在完成了的,而不能确定是否是过去完成的,所以此处应选用现在完成时,不...