英语很“简单”

It's really simple.很简单。

It's a piece of cake.小事一桩。

It's as easy as pie./ It's as easy as ABC.真是易如反掌。

It's no big deal! 没什么大不了的！

It's a no-brainer! 这很简单，不用动什么脑筋的。

I can do it with my eyes closed! 我眼睛闭起来都能做！

That's no sweat at all! 那一点也不难!

Nothing to it! 没什么难的！

It's a cinch! 简单的很！