She wasn't born yesterday.

她又不是三岁小孩

You can't fool her.She wasn't born yesterday.

你骗不了她，她又不是三岁孩子。

Don't try to cheat me, I wasn't born yesterday.

不要试图欺骗我，我又不是三岁小孩。

A:Susan,do you want to drop by Tom's with me tonight?I hear he's having a party.

苏珊，今晚你愿意和我一起去汤姆家吗？我听说他在举办晚会。

B:I wish I could.But I promised to run errands for my mom.I don't think I can get out of it.

我希望我能去。但是我已经答应了我妈妈帮她做点事。我觉得我可能推不了。

A:You could tell her something important came up.

你可以告诉她你有点着急的事情要做。

B:Like what?

比如呢？

A:You could say that an old friend turned up and that you wanted to see her.

你可以说，来了一个好朋友，你想见她。

B:I don't think she'll believe such excuses.She wasn't born yesterday,you know.Maybe I can come later on.

我觉得她不会相信这种借口。她又不是小孩子。没准我可以晚点去。