定语从句的几个问题
1.Weneedachairman__.
Ainwhomeveryonehasconfidence
Bwhomeveryonehasconfidence
为什么选A呢?关系代词前面的介词都是怎么确定的呢?
2.Livinginthewesternpartofthecountryhasitsproblem,__obtainingfreshwaterisnottheleast.
A.withwhich
B.forwhich
C.ofwhich
D.which
3.Theprofessorcouldhardlyfindsufficientgrounds__hisargumentsinfavourofthenewtheory.
A.tobebasedon
B.tobasedon
C.whichtobasedon
D.onwhichtobased
做这些定语从句的题,最关键是看什么呢?