①If I were you, I would follow his advice.
②If I'd wanted to see them, I would have had to visit them in person.
③If I had time tomorrow, I would attend the concert.
④If it were to rain tomorrow, the sports meeting would be put off.
⑤If I should do the experiment, I would do it some other way.
⑥Had you informed me earlier, I wouldn't have signed the contract.
⑦But for the rain(＝If it hadn't rained), we should have arrived yesterday.
⑧I'm really busy, otherwise I would certainly go with you.(otherwise＝if I were not so busy)
