介绍：

Laugh in face 当面嘲笑
I told him my unpleasant experience but he just laughed in my face, right in front of my friends.
我告诉你他我不愉快的经历，但他当着我朋友的面嘲笑我。

For a laugh 就是开个玩笑，为了取乐
I sing just for a laugh. I never expect to entertain others.
我唱歌就是图个开心，从没想着去取悦别人。

Not know whether to laugh or cry
不知如何是好，哭笑不得
Last night my ex told me that she was going to get married, I don’t know whether to laugh or cry.
我的前任昨晚告诉我她要结婚了，我是该哭还是该笑呢。

No laughing matter
正经事
Everyone of you will be fired if you can’t finish the project before the deadline!
截止日期之前，如果你们没法完成项目，所有人都被炒鱿鱼！

Laughing stock
别人眼中的笑料
I can’t wear a suit and tie to the party. I’ll be a laughing stock.
这个聚会我不能穿西装领带去。我会成为别人的笑柄。