一般口语只要单词用对，可以随便说出口的，几个简单的问句，希望能帮助你。

Why are you in a bad mood？

Can you tell me why and so sad？

See you so sad I'm sorry, could you tell me why

一般口语只要单词用对，可以随便说出口的，几个简单的问句，希望能帮助你。

Why are you in a bad mood？

Why are you so sad？

Can you tell me why and so sad？

See you so sad I'm sorry, could you tell me why

附送你一句：No man or woman is worth your tears, and the one who is, won’t make you cry。