Okay, you know, first of all, I am not my mother.好吧，首先，我不像我母亲

first of all首先

First of all, let me tell you the news.

首先，让我告诉你这个消息。

Wait, why don't you make her fix this instead of you doing it, as usual? 为什么这次是她自己主动来了，以前不都是你帮她处理烂摊子的吗

instead of代替；而不是 ...

Oops! I put in sugar instead of salt.

啊！我错把糖当盐放了。

Plastic is sometimes used instead of leather.

塑胶有时可以替代皮革。

mom makes a mess,and there's mitchell to clean it up.每次妈妈搞得一团糟Mitchell就会来收拾残局

clean up收拾干净；打扫

You should always clean up the room.

你应该经常清理房间。

He do all he can to clean up on his opponent.

他想方设法要击败他的对手。