It is important_________ English.

Question

It is important_________ English.
A.learning
B.to learn
C.having learned
D.to have learned
答案是B.to learn 我想问下为什么不能用A.learning作主语？

Answer 1

It is important to learn English.

Answer 2

be important to do sth. 译为“做...是很重要的”。

Answer 3

to do 通常指动作将要发生；doing通常指已经完成

例如：
刚碰到一个人时说：nice to meet you
跟这个人聊完后，要分手会说：nice meeting you