How to use the phrase "would have" in a sentence

Question

Should I use would have if I am talking about something that could happen because of what someone did? I am always confused about this. For example:

If you told her, you would have seen the play. And if you didn't you would probably have seen it.

And should I also use it if I am telling a story about my past, and there is something that could also happen in the future but I expect to happen in the past. For example:

When I was a kid anything I expected would have happen and if I didn't it wouldn't have.

Answer 1

How to use would have in a sentence:

If you had told me, I would have seen the play.

This would not have happened to me at any other time in my life.

I would have gone, if you had told me.

Anything I would have expected to happen when I was a child, did happen.

If I won the lottery, I would have a lot of money. [standard grammar]

Many people say: If I win the lottery, I would have a lot of money. [what you see and hear "out there" in the media, conversations and online]