1. Nam goes to bed late, so he will be tired.

=> If Nam doesn't go to bed late, he won't be tired.

2. My room has four tables.

=> There are four tables in my room.

3. He has enough time, so he walks to school.

=> If he doesn't have enough time, he doesn't walk to school.

1.If Nam does not go to bed late, he won't be tired.

2.There are 4 tables in my room.

3.If he does not have enough time,he does not walk to school.

dịch

1. Nếu Nam không đi ngủ muộn, anh ấy sẽ không mệt.
2.Có 4 bàn trong phòng của tôi.
3. Nếu không có đủ thời gian, anh ta sẽ không đi bộ đến trường.