你好象在等待什么？英语怎么说？

you(第二人称)后面加look而不是looks.这句话可以说成:You look like you are waiting for something.
但通常不这样说,因为look like 是"看起来像..."的意思,表示比较.通常用下面的句子来表示:
It seems/looks like that you are waiting for something.

You look like you are waiting for something.
用look,只有第三人称单数he, she, it, this, that,用looks.

It looks like you are waiting something.
外国人习惯这么说

正宗的英语口语: You look waiting somebody ?

如果要用Look like 的话,肯定不能用后面的那个you looks like 了, You 是第二人称,谓语动词不能加S的, 只有单数第三人称才会加S 或ES, 如 He looks like ..., he does very well..

You seem to be waiting for something.

You look like waiting for sht!

比如:你看上去像你的妈妈 you looks like your mother.