有关于定语从句

Question

please give back my book which i lent to you
the money which you lent me was lost，为什么第二句中用which而不是to which？为什么
为什么不是you lent the money to me？为什么？我还是不明白 ，那两种是否可以互换

Answer 1

首先，
lent sb. sth / lent sth. to sb.

句子还原：
the money which you lent me was lost
the money was lost
you lent me the money【lent sb. sth 】
显而易见不需要介词to

please give my book back which i lent to you
i lent my book to you【lent sth to sb. 】
显而易见需要介词to

Answer 2

张老师带你了解什么是定语从句。

Answer 3

the money which you lent me was lost
你借给我的钱丢了
which 是关系代词，代指the money

Answer 4

什么是定语从句？

Answer 5

第一道加TO是因为lent sth to sb
第二道是 lost money