You say 'Good heavens!' or 'Heavens!' to express surprise or to emphasize that you agree or disagree with someone.
Good Heavens! That explains a lot!
天哪!那很说明问题!
heavens
In some religions, heaven is said to be the place where God lives, where good people go when they die, and where everyone is always happy. It is usually imagined as being high up in the sky.
paradise
I believed that when I died I would go to heaven and see God.
我相信我死后会进入天堂,见到上帝。
You can use heaven to refer to a place or situation that you like very much.
I would go to films in the afternoon and football matches in the evening. It was heaven.
我下午去看电影,晚上去看球赛,真是享受。
heaven help someone
You say 'Heaven help someone' when you are worried that something bad is going to happen to them, often because you disapprove of what they are doing or the way they are behaving.
If this makes sense to our leaders, then heaven help us all.
如果我们的领导同意了,那真的只有老天开眼才有救了。
heaven knows
You can say 'Heaven knows' to emphasize that you do not know something, or that you find something very surprising.
Heaven knows what they put in it.
天知道他们往里面放了些什么。
You can say 'Heaven knows' to emphasize something that you feel or believe very strongly.
Heaven knows they have enough money.
确实他们有足够的钱。
the heavens open
If the heavens open, it suddenly starts raining very heavily.
The match had just begun when the heavens opened and play was suspended.
比赛才刚刚开始,就突然下起倾盆大雨,于是比赛暂停。