要是...就太好了用英语怎么说?怎么说?举个例子?

问题描述:

要是...就太好了用英语怎么说?
怎么说?举个例子?

If only
If only I were a boy.
我要是个男孩儿就好了.

It would be great if ...
if后面要用虚拟事态.
It would be great if I were you.
如果我是你就太好了.