Hello! Somebody's left their hat behind.

哎!有把帽子拉在这儿啦。

Ouch!I’ve stuck the needle in my finger

!哎！我的手指被针扎了！

Whoops! wrong class.

哎！走错教室了！

Whoops! I nearly dropped it.

哎！我差点把给摔了。

Ouch! It really hurts.

哎！真疼啊。