1.you will feel worse unless you take more exercise
2.if you aren’t careful,the car may hit you
3.no one is going to help you unless you change your mind
4.i won’t it out unless you give me more time
5.if you don’t accept my suggestions,you won’t do it well
6.you will fail the exam unless you study harde
7.be careful,or you will have an accident
8.you will be late for school if you don’t hurry up
9.we will go out for a walk unless it rains
10.they will give up working hard unless you encourage them
不是翻译中文句子，
大概是 那种改为同义句的类型的。