1, If you don't study hard, you will fail the exam
=> If you study hard, you won't fail the exam
2, If you don't work hard, you will fail the examination
=> If you work hard, you won't fail the examination
3, If you don't water flowers, they will die
=> If you water flowers, they won't die
4, If we don't keep the environment clean, we won't have an ideal place to live
=> If we keep the environment clean, we will have an ideal place to live
5, If you get up early, you won't be late for school
=> If you don't get up early, you will be late for school