1.They plan to make this beach a clean and beautiful place again
2.If we use the car all the time , we will make the air dirty
3.Unless I leave now , I 'll miss the train
4.If I don't have a quiet a room , I won't be able to do anything
5.If you don't hurry up , you will be late for school
6.If you don't study harder , you won't pass the exam
*Cấu trúc câu điều kiện loại 1 : If + S + V(s/es) , S + will/can + Vinf....
Unless + S + V(s/es) , S + will / won't + Vinf... (thường thì mệnh đề phụ sẽ trái ngược với câu gốc)