as it happens
You use as it happens in order to introduce a statement, especially one that is rather surprising.
He called Amy to see if she knew where his son was. As it happened, Amy did know.
他打电话问埃米是否知道他儿子在哪儿。碰巧的是,埃米还真知道。
happens , happening , happened
Something that happens occurs or is done without being planned.
We cannot say for sure what will happen.
我们说不准会发生什么事。
If something happens, it occurs as a result of a situation or course of action.
She wondered what would happen if her parents found her.
她不知道如果父母找到她会有什么后果。
When something, especially something unpleasant, happens to you, it takes place and affects you.
If we had been spotted at that point, I don't know what would have happened to us.
如果那时我们被发现了,我不知道会有什么后果。
If you happen to do something, you do it by chance. If it happens that something is the case, it occurs by chance.
We happened to discover we had a friend in common.
我们碰巧发现我们有个共同的朋友。