If I'm in a good mood, I'd play my Er hu, though I'm not very good at it I do enjoy it.
心情好的`时候，我还会拉拉二胡，虽然水平不高，但我却陶醉于其中。
I'm in such a good mood.
我的心情真的很不错呢。
And I'm not in a good mood, so just walk away.
我现在没好心情，所以赶紧闪开。
Sheldon: You know, I'm in such a good mood.
你知道吗，我心情如此之好。
Dude, why do you think I'm in such a good mood?
要不你说我心情怎么这么好？