thirty-nine. If I did… , I would…
39. 如果我……，我会……
If I had known the truth, I wouldn't have blamed him.
如果我知道真相，我就不会责备他了。
If I had his phone number, I would phone him immediately.
如果我知道他的电话号码，我会立刻给他打电话。
If I had enough money, I would buy a new house.
如果我有足够的钱，我会买一套新房子。