Forming conditionals

[Molly]

Which of these would you consider to be well-formed sentences?

1. If he would come, I’d ask him.
2. If he’s come, I’ll ask him.
3. If he’ll come, I’ll ask him.
4. If he’s going to come, I’d ask him.
5. If he could come, I’d ask him.
6. If he can come, I’ll ask him.
7. If he might come, I’d ask him.
8. If he comes, I’m going to ask him.
9. If we hadn’t been going to ask him, he wouldn’t have been invited.
10. If he hadn’t been invited by us, he wasn’t going to get an invitation at all.

[Yankee]

If you're going to post questions about so many sentences all at once, it seems to me that the least you could do is to say what you think each one means and which ones you think are well-formed.
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