【最新】人教版七年级英语下册unit4重难点讲解和练习

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Unit 4 Don't eat in class.知识点总结

◆短语归纳

1. in class 在课上 in the classroom 在教室里 2. arrive late for class = be late for class上课迟到 3. (be) on time 准时 in time及时 4. fight with sb. 和某人打架 5. eat in the dinning hall在餐厅吃东西

6. must + 动词原形 必须做某事 = have to + 动词原形. 不得不做某事

7. bring…to… 把…带到…来 8. eat outside 在外面吃饭 9.wear a school uniform 穿校服 10. practice the guitar 练习吉它 practice playing the guitar 练习弹吉他 11. on school nights在上学的晚上 on school days在上学的日子

12. too many + 可数名词复数 too much + 不可数名词 表示太多…

13. make one’s bed 铺床 make breakfast 做早饭 make friends 交朋友

14. make rules 制定规则 follow the rules 遵守规则 break the rules 违反规则 15. keep quiet= be quiet 保持安静 be noisy吵闹 16. keep hair short 留短发 17. do the dishes 清洗餐具 18. wear a hat 戴帽子 19. listen to? 听? 20. learn sth. 学习某事 learn to do sth. 学习做某事

21. have fun (doing sth)玩得高兴 22. be strict (with sb.) 对某人严格

◆语法归纳 一、祈使句:

1.祈使句是用来表示请求、命令、叮嘱、邀请、劝告或祝愿等的句子。它的特点是以动词原形开头,末尾可用句号或感叹号。祈使句没有疑问句的形式,一般只有肯定和否定两种形式。

肯定句 动词原形 + 其他 Be + 形容词 Let sb. do sth. Open the door ! Be quiet ! Don’t + be + 形容词 否定句 Don’t + 动词原形 + 其他 Don’t open the door ! Don’t be quiet ! Don’t let him do homework. Let me not do home work. No photos ! No talking !

Let me do homework. ? 两种 Don’t let sb. do sth. Let sb. not do sth. No + 名词 No + 动名词

以Let开头的祈使句,Let后宾语是是第一人称时,否定形式是在宾语后加not, Let’s not do that again.我们别再那样做了。

如果Let 后面宾语是第三人称,否定形式是在Let前加助动词Don’t, Don’t let her go!别让她走! 2.对祈使句的基本回答。

(1)对Do sth. 的回答

肯定回答:Yes, I will. 好的,我会做的。否定回答:Sorry, I can’t do it. 对不起,我不能做...... (2)对Don’t do sth.的回答

Sorry, I won’t. 好的,我不会的。

(3)用“Let’s do sth.”时,常用于提出建议。

肯定回答:That’s a good idea. 或That sounds good. (直接表示赞同)。 否定回答:可用“No”作否定回答,并适当解释或提出自己的见解) 【典型例题】

1. 请听我说。_______________________ 2. 让我们去学校吧!_________________________ 3. 请小心点儿!_________________________ 4. 不要在教室里跑!_____________________ 5. 不要让狗进来!_____________________ 6. 禁止吃东西。________________________ 7. 不要吵闹!___________________________

8. ________late for class! A.Don’t B.Not be C.Don’t be

9.________worry(担心) about me Mom.I’ve grown up. A.Don’t B.Don’t be C.Not D.Not be 10.Run in the hallways.(改为否定句) ________ ________in the hallways. 11.No talking.(改为同义句) ________ talk.

12.You can’t turn on the radio. (改为祈使句) ________ _______ on the radio. 二、have to & must

二者否定式的意义大不相同。have to 的否定式表示“不必”,而must not/mustn’t表示“不准”。 例句: I don’t have to finish my homework now. needn’t = don’t have to You mustn’t arrive late for class. 【典型例题】

1.The children ________play football on the road. A.can B.must C.mustn’t D.may 2.---Must I clean the blackboard? ---No,you ________. A.needn’t B.mustn’t C.can’t D.may not 3.It’s very warm outside.You ________wear the coat.

A.have to B.hadn’t C.don’t have to D.mustn’t 4.She_______ clean the room today. A. have to B. has to C. has

5.我不得不做英语作业。 I ______ _____ ________ my English homework. 6.I have to get up at six.(一般疑问句) _______ you _____ ______ ______ up at six? 7.选择括号中正确的一项

(Can/Does)______ we eat in class?

Does Bill (have to/can)_________ go to bed now? 三、Don’t fight.

? fight作动词,意为“打架、打仗”。 fight for“为…而斗争”, fight with sb.“和…打架”

? fight作名词,意为“打架;吵架” get into a fight/ have a fight with sb.同某人吵架/打架 四、Don’t arrive late for class. You must be on time. 1.辨析arrive、get 、reach 相同点:都是“到达“的意思

不同点:arrive为不及物动词。 arrive at+小地点;arrive in+大地点

He arrived in Shanghai yesterday. She arrives at school early. get为不及物动词 get to +地点名词 I get to Chongqing with my family. reach是及物动词 reach+地点名词 When do you often reach school?

注意:get和arrive与地点副词(here/there/home…)连用时不用介词to 2.(1)on time“准时,按时”,指按规定的时刻不早不晚。

1.must意思为“必须??”,强调主观原因; 肯定式:must + V原; 否定式:must + not (mustn’t)+ V原; 疑问式:Must + 主语+ V原...? 例句: 1). You must go home now. 2). You mustn’t smoke here. 3). Must I do homework now ? Yes, you must./No, you needn’t. 由must引起的疑问句,肯定回答要用must或have to,否定回答要用needn’t或don’t have to,意思是“不必” 2. have to 表示“不得不”、“必须”,强调客观原因。 肯定式:have to + V原 has to + V原 否定式:don’t have to + V原 doesn’t have to + V原 疑问式:Do + 主语 + have to + V原? Does + 三单主语 + have to + V原? 例句:1). She have to go to bed. 2).She doesn’t have to go to bed. 3). Does she have to go to bed? Yes, she does./ No, she doesn’t. (2)in time“及时”,指没有迟到,时间还充裕。

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