众所周知，英语一直都是孩子们十分头疼的一门学科，因其复杂的语法知识和语句结构导致很多初中生和高中生都摸不到英语学习的规律，但是找到一个科学有效的学习方法，学习英语就会变得有规律可寻。下面，小编就给大家分享初中三年需要掌握的20个重要句型，希望对孩子们有所帮助!

　　1. forget doing sth. 忘记做过某事了(已做)

　　Eg. I forgot turning off the lights. Look, it is dark in the room.

　　2. forget to do sth. 忘了做某事了(未做)

　　Eg. I forgot to turn off the lights. Could you go back and shut the off?

　　3. remember doing sth. 记得做过某事了(已做)

　　Eg. I remembered returning your money. You are so forgetful.

　　4. remember to do sth. 记住去做某事(未做)

　　Eg. Remember to bring me some money. I’ve run out of it.

　　5.stop to do sth. 停下来去做某事

　　Eg. He stopped to talk with Mary when she enter the office.

　　6. stop doing sth. 停止做某事

　　Eg. The students stopped talking when the teachet came in.

　　7. watch/see/hear sb. do sth. 观看/看见/听见某人做了某事(全过程)

　　Eg. I saw you pick an apple just now.

　　8. watch/see/hear sb. doing sth. 观看/看见/听见某人正在做某事(点动作)

　　Eg. I saw you playing basketball with your classmates on the playground last Sunday.

　　9. go on doing sth. 继续作某事

　　Eg. He went on reading after a short rest.

　　0. go on to do sth. 继续作某事

　　Eg. He went on to read after finishing wash the dishes.

　　11. go on with sth. 继续某事

　　Eg. He went on with his work after a short rest.

　　12. say hello/goodbye to sb. 向某人告别

　　Eg.I came to say good-bye to you.

　　13. be busy doing sth. 忙于做某事

　　Eg. They are busy planting trees on the hill.

　　14. be interested in sth. 对某事感兴趣

　　Eg. English is very interesting. We are all interested in it.

　　15. tell sb. to do sth. 告诉某人做某事

　　Eg. Mother told me to go shopping with her.

　　16. ask sb. to do sth. 让某人做某事

　　Eg. Jim ask me to go rowing with him.

　　17. call/ring sb. up 给某人打电话

　　Eg. I will call you up tommow.

　　18. be ready to do sth. 准备做某事

　　Eg. We are ready to have lunch.

　　19. go doing sth. 去做某事

　　Eg. Let’s go fishing.

　　20. prefer A/doing A to B/doing B 比起A/做A，更喜欢B/做B

　　Eg. Lucy prefers English to French.

　　I prefer staying at home to going to the cinema.