1 If she didn't love him, she wouldn't forgive him easily.
2 If it didn't rain, the children could go swimming.
3 If they behaved themselves, their parents would be happy about that.
4 Unless you speak quickly, I could understand you.
5 Unless you have money, I can lend you some.
6 If we didn't hurry, we will miss the bus.
7 If you didn't do the test carefully, you would get bad mark.
8 If you didn't come soon, you might not meet us.
9 Unless you study hard, you may fail the exam.
10 Unless I have the key, I can't get into the house.
11 If Nga doesn't hurry, she will miss the last train.
12 If Mary had enough money, she would buy this shirt.
13 If Tom didn't eat too much, he wouldn't get fat.
14 If she worked hard, she would get good marks.
15 If he doesn't phone her immediately, he won't get information.
16 If he doesn't apologize, I'll never invite him here again.
17 If you didn't speak slowly, he couldn't understand what you mean.
18 If we didn't keep our environment clean, we won't enjoy a healthy life.
19 If I was a millionaire, I could buy you a car.
20 If he didn't put the raincoat on, he would get wet.
21 If today was a holiday, we could go for a picnic.
22 He would do that if you permitted him.