难道你还不明白吗？ 翻译成英语

I treat you so well. Don't you understand?

Since I devote so much for you,why can't you realise my truely love FOR YOU?
是这个意思吧，外国人说话一般没我们这么含蓄。

Don't you understand why I treat you like this

语法一定要对，要不然整个意思都会错

i treat you like this, how can you still not understand?

I treated you,do you not understand？
错了别怪我，在金山词霸里找的

i treat you like this
don't you understand?