Question

把这个句子合并成含有定语从句的主从复合句

He used to live in a big house. In front of it grew many banana trees.
马上要答案，速度要快
那么我写上去了呐，如果正确的话明天给分

Answer 1

He used to live in a big house,in front of which grew many banana trees.
一楼的答案是正确的，两个句子中的相同部分为 house，所以以house为先行词，做成非限定性定语从句，且是先行词有介词短语修饰限定。
三楼的句子是个错误句子，该句子中没有明确的先行词，且从句不缺少任何成分，不是定语从句的构成

Answer 2

He used to live in a big house which in front of it grew many banana trees.
2楼的，你跟一楼是同一个人吧，靠这样拉分啊？

Answer 3

没问题，上一个人的答案完全正确。

Answer 4

He used to live in a big house,in front of which grew many banana trees.

Answer 5

The
teacher
pointed
the
mistakes
that
the
students
hadn't
corrected.