Nobody but doctors and those

来源:百度知道 编辑:UC知道 时间:2024/05/24 03:06:55
Nobody but doctors and those __________by Dr.Zhang ______ the room.
A.invited;is allowed to enter
B.are invited;are allowed entering
C.invited;is allowed entering
D.is invited;are allowed to enter

请说明理由及这里面包含的语法问题

选答案A
those(that are) invited by意为:那些被邀请的人
allow sb to do sth
综上所以选A

D
invited修饰those,那些被邀请的人
后面be allowed to do 被允许....

B
be动词+动词的过去式+by表被动语态