定语从句的问题,关系副词where和介词加which什么时候可以互换,什么时候不能换?

题目

定语从句的问题,关系副词where和介词加which什么时候可以互换,什么时候不能换?
He has lost the key to the drawer____the paper are kept.
a where b in which c under which d which
The train __she was traveling was late .
A where B in which C under which D which
到底应该选哪个,答案要有说服力.
答案c应该是on which

答案

1 He has lost the key to the drawer__A / B__the papers are kept.
a where b in which c under which d which
选项A 和B 都是正确的,都指代方位,表示“在- - -里面”.
the drawer in which ==where the papers are kept
2 The train _B _she was traveling was late .
A where B in which C under which D which
这句只有B是正确的,因为 in 这个介词在这里解释为“乘坐”,不解释“在-- - 里面”.ok?