动名词和不定式的区别、to talk to him is to talk to the wall

题目

动名词和不定式的区别、to talk to him is to talk to the wall
为什么不能用talking to him is to talk to the wall

答案

这里两个都可以使用,但是要注意的是前后保持一致,因为后面是to talk to the wall,所以前面最好还是用动词不定式to talk to him ,如果后面表语是talking to the wall,那么主语可以用动名词 talking to him.关键是讲究一个对称.
这类例子很多,比如：To see is to believe.
Seeing is believing.眼见为实.
希望帮助到你,学习进步.