Next point could be about where they actually get their music.
Next point could be about where they actually get their music.来源于：剑雅6-Test3
aux.v. I couldn't;I couldn't possibly：（用于礼貌地谢绝更多的食物或饮品）不用了
More cake?—Oh no, I couldn't.
aux.v. could have done sth：本可以
He could have made a fortune as a lawyer.
You could have been killed!
aux.v. how could …：（用在疑问句中强调对所发生的不愉快之事的感受）怎么会
How could you!
How could I have been so stupid?
aux.v. if I could…：（用于礼貌地打断别人或引出将要说的话）请允许我…
Now, Dave, if I could just interrupt.
Could I stop you there?
First of all, could I begin with an apology?
aux.v. you could always …：（用于引出他人可能不愿接受的建议）你可以
Of course, you could always ask your boss for permission to use the meeting room.
In those days you could get a job easily.
I couldn't sleep because of the noise.
They couldn't understand a word.
He could be very pleasant when he wanted to be.
I couldn't be happier.
The news couldn't have come at a better time.
She could have screamed with frustration.
Anne couldn't be expected to understand the situation.
He couldn't have been more than fourteen years old.
Could I speak to you in private?
He asked if he could make a phone call.
You could at least say hello!
Why couldn't she have said something?
If I could afford it I'd have four television sets.
If only I could get some sleep, I would be able to cope.
Their hope was that a new democracy could be born.
You could be right.
He could be in the library.
They could have forgotten.
She could have been delayed.
An improvement in living standards could be years away.
I could always call the local doctor.
It's boring to walk all alone.—couldn't you go for walks with your friends?