I___ going to the USA, is busy learning English.A who is B who am C that is D what is请解释一下理由 语法
问题描述：
I___ going to the USA, is busy learning English.
A who is B who am C that is D what is
请解释一下理由 语法
答
我觉得是A
答
A
答
B
答
B
"who am going to the USA"是一个从句 ，修饰“i ”,而“ i who am going to the USA”是后面整个句子“is busy learning English”的主语，此时不能跟“am ”,只能用“it”,因为它是一个整体。这个记住就是了
答
答案是A