Thisisananswerwhichourteacherissatisfied.此题为改错题，请详细分析一下。为什么要在which前面加with，请说明下理由,十分感谢。

Question

This is an answer which our teacher is satisfied.
此题为改错题，请详细分析一下。为什么要在which前面加with，请说明下理由,十分感谢。

Answer 1

我们把先行词和从句提取出来
answer which our teacher is satisfied
我们老师满意的答案。如果说要陈述语序呢？即我们老师对这个答案满意，于是就倒装一下
our teacher is satisfied an answer
这句话对吗？当然不对，因为is satisfied可以理解成不及物动词，一定要加介词with才能连宾语。或者说这是固定搭配，be satisfied with
所以应该是our teacher is satisfied with an answer
定语从句也应该遵循这个规则，不可以缺省介词，即原句为This is an answer which our teacher is satisfied with.
在高中知识中，这里的with可以前置到连接词前面（别问为什么可以，这是外国人的语言语法
This is an answer with which our teacher is satisfied.
所以This is an answer which our teacher is satisfied with.等于This is an answer with which our teacher is satisfied.
介词可以提前也可以不提前，所以本题答案不唯一