我想知道你离开我到底能不能活．这句话英文怎么说？

I'm wondering whether you can live without me?

I was wondering if you could live without me.

was wondering就是想要知道的地道说法，if引条件状语从句，后接could，这个句子的形式是美国人一般会说的，英国人怎么表达就不知道了。

希望你能满意~

I want to know whether you can live without me or not.

看看这个试试吧：
I want to know you leave I can be after all live.

I'm wondering if you could live without me.

I wonder if you could live without me.