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Don’t eat in class
单元知识点梳理
一. 单词：
rule, arrive, hallway, hall, dining, listen, fight, sorry, outside, wear, important, bring, uniform, quiet, out, practice, dish, before, dirty, kitchen, more, noisy, relax, read, terrible, feel, strict, remember, follow, luck, keep, hair, learn,
二．短语：
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
arrive in + 大地方 arrive at + 小地方
3. (be) on time 准时 4. fight with sb. 和某人打架
5. must + 动词原形 必须做某事 = have to do sth. 不得不做某事
6. bring…to… 把…带到…来 Bring your book to school (me).
7. eat outside 在外面吃饭 wear a uniform 穿制服wear glasses 戴眼镜
8. practice the guitar 练习吉它 practice playing the guitar 练习弹吉他
9. on school nights在上学的晚上 on school days在上学的日子
10. too many + 可数名词复数 too much + 不可数名词 表示太多…
11. make one’s bed 铺床 make breakfast 做早饭 make friends 交朋友
help sb. do sth.
help sb. with sth.
help sb. with doing sth.
12. 13. too 肯定句中表示“也”。
either 否定句中表示“也”
I can play chess. She can, too.
I can’t play chess. She can’t, either.
I can’t watch TV, I can’t play chess either.
14. think about 考虑、认为
如：How do you think about this sweater? 你觉得这件毛衣怎样？
15. make rules 制定规则follow the rules 遵守规则break the rules 违反规则
16. keep (+名词或代词)+形容词，表示保持某物怎么样 keep quiet 保持安静
keep your hair short保持头发短 keep your room clean 保持房间干净
17. learn sth. 学习某事 learn English learn the guitar
learn to do sth. 学习做某事 learn to speak English / learn to swim
18. be strict (with sb.) 对某人严格 My mom is strict with me.
19. remember 记住，常用短语有：
（1）remember sth./sb. 记住某物、某事、某人
Please remember this sentence. 请记住这个句子。
（2）remember to do sth. 记住做某事（事情还没做）
Remember to bring your homework to me. 记得把你的作业拿给我。
（3）remember doing sth. 记得做过某事（事情已经做了）
I remember reading this book. 我记得读过这本书。
三．句子和语法：
Don’t run in the hallways. Don’t fight.
What are the rules? We must be on time for class.
Can we eat in the classroom?
No, we can’t, but we can eat in the dining hall.
Can we wear a hat in class? Yes, we can. No, we can’t.
英语祈使句：
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
否定句
Please + 动词原形 + 其他
Please come in.
Please + don’t +动词原形 + 其他
Please don’t come in.
动词原形 + 其他
Open the door!
Don’t + 动词原形 + 其他
Don’t open the door!
Be + 形容词
Be quiet!
Don’t + be + 形容词
Don’t be quiet!
Let sb. do sth.
Let me do homework.
Let sb. do sth.
两种：
Don’t let me do homework.
Let me not do home work.
No + 名词
No photos!
No + 动名词
No parking!
have to & must
1. must意思为“必须……”；
肯定式：must + V原；
否定式：must + not + V原；
或 needn’t + V原;
疑问式：Must + 主语……?
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”。
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). It’s too late. I have to go to bed.
2). They don’t have to finish the work today.
3). He has to leave home.
4). Does he have to leave home?
Yes, he does./ No, he doesn’t.
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： A. I don’t have to finish my homework now.
B. You mustn’t arrive late for class.
needn’t = don’t have to
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