用who,whom或which把以下每对句子改写成一句话.This is the old man.I helped him the before yesterday.

问题描述:

用who,whom或which把以下每对句子改写成一句话.
This is the old man.I helped him the before yesterday.

This is the old man whom I helped the day before yesterday.
这句话是定语从句,意思是“这是我前天帮助过的一个老人”,因为help somebody中somebody是作宾语,所以选用whom.
希望对你有用!