Tom has a little money in the bank,__support his family 我们老师说这里填with which to 作定语,请问

问题描述:

Tom has a little money in the bank,__support his family 我们老师说这里填with which to 作定语,请问
为什么一定用介词with

with是介词,指明Which的代表词,这句话可以分成两个句子.
Tom has a littile money in the back. He would support this family with this money.
如何不用With的话,Which就是代表bank这个词,与语境不符为什么不用with就是形容bank