6. Don’t talk in class or you will not understand the lessons. -> If -> Unless 7. Learn hard, and you will get good marks. -> If -> Unless 8. If he doesn’t study hard, he will fail the exam. -> Unless. 9. Unless it doesn’t rain torrow, I will go for a picnic. -> If 10. Unless you don’t hurry up, you will be late for school. -> If

`N`

`1.` 

`->` If you talk in class, you won't understand the lessons.

`->` Unless you stop talking in class, you won't understand the lessons. 

`2.` 

`->` If you learn hard, you'll get good marks.

`->` Unless you learn hard, you won't get good marks.

`3.` Unless he studies hard, he will fail the exam.

`4.` If it doesn't rain tomorrow, I'll go for a picnic. 

`5.` If you don't hurry up, you'll be late for school.

`-` CĐKL 1 : If + S + V (hiện tại đơn), S + will/can/may + V-inf

`->` Diễn tả những tình huống có thể xảy ra trong tương lai nếu điều kiện được đáp ứng.