I have these future in the past questions that I hope you could help me with:
1) I was wondering if you could tell me where he is now.
2) She promised we would talk about it when I come to your party tonight.
3) She promised me she would come to your party tonight/tomorrow.
4) At first we didn't know if we should approach you. But finally we thought we should let you know that there are other people out there who are agaist the act too.
For the first question, I don't know if I should use "where he is now" or "where he was then". But the "where he was" sounds weird to me.
For the second question, I don't know if I should use "I come" or "I came". Formally I think I should use I came. But it sounds weird. If I choose "I came", then how about "tonight"? Should I change it to "that night"? I think this will become total meaningless.
For the third question, the main clause is in past tense. But how about "tomorrow"?
For the forth question, the thought is in the past. But the event is current. Should I stick to grammar rules to use all past tense or simply ignore the rule to change the sub clause to present tense?
And finally, I don't know which explaination is formal or informal anymore. I ask other people, some say all can be used, some say stick to the grammar rules and the sentenses above are wrong. But the English formal rules don't make sense when you speak. But if you use the informal one, that means trashing all the grammar rules away. What I am suppose to do?