英语虚拟句子

怎样将下列句子改写成if虚拟条件复合句
1 I made a lot of mistake because I am careless.
2 She is still very weak. So I won't allow her to go to school.
3 We didn't catch the train because we were late.
4 He doesn't have enough money, so he cannot buy a car.
5 Xiaoming doesn't study hard; so has trouble with his CET4.

1.If I weren't careless,I wouldn't make a lot of mistake.
2.If she was still very weak, I wouldn't allow her to go to school.
3.If we weren't late ,we would catch the train .
4.If he had enough money, he could but the car.
If he didn't study hard ,he would has trouble with his CET4.

If I'm careless, I would make a lot of mistakes.
If she is still very weak, I would not allow her to go to school.
If we were late, we wouldn't be able to catch the train.
If he doesn't have enough money, he won't be able to buy a car.
If Xiaomind doesn't study hard, he would have trouble with his CET4.

1.If I were careful, I would not have made a lot of mistakes.
2.If she is not very weak, I would allow her to go to school.
3.If we were not late, we would have caught the train.
4.If he have enough monry, he would buy a car.
5.If Xiaoming studies hard, he would not have trouble with his CET4.