条件状语从句 if 1.He’ll do better in English.He will work harder.2

1 He'll do better in English if he work harder.
2 You will be late if you don't hurry up.
3 We won't be able to get there at ten if we don't leave now.
4 if working hard you will pass the exam
5 They will stay at home if it rain tomorrow
6 You'd better go to see the doctorif you are ill.