Do sing along if you know the words.
要是知道歌詞，你就跟著唱吧。
I'll sing if I want to ─ there's no law against it.
我想唱就唱——誰也管不著。
There is some similarity in the way they sing.
他們的演唱風格有點像。
I can't sing that high.
我唱不了那么高的調子。
He doesn't sing all that well.
他唱得并不特別好。