I am going to do what i want to do .中的what 可不可以改成

问题描述:

I am going to do what i want to do .中的what 可不可以改成
that.为什么呢

what 是主句的宾语,在从句中也是句子成分,有实际意义,that一般做定语
比较一个,i am going to do the thing that i want to do.那么。he is the only student who understand English well .中的who能不能改成that呢。为什么:-!可以,that既可以指人也可以指物,指人时相当于who