he didn't remember ＿the book and said he would give it to me the next day
问题描述：
he didn't remember ＿the book and said he would give it to me the next day
a .to return c .returning 为什么 不能选a啊
答
remember to do sth 记得去做某事
remember doing sth 记得做过某事
根据he would give it to me the next day 他第二天会还给我,说明他不记得已还了（已经做了）he would give it to me the next day您的意思说 这个虚拟语气吗 麻烦给详细说一下嘛这儿是个暗示吗不是虚拟语气，后半句是宾语从句，把它分成：he didn't remember ＿the book ，他不记得他把书还了给我。（事实上他已把书还我了，只是不记得罢了）He said he would give it to me the next day 他说他第二天会还给我。