Unit 4 Don’t eat in class.单词解析和语法 课件（共有PPT24张）

(共24张PPT)
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本节课的主要内容
1. 完成4单元单词的解析及教授。
2. 完成4单元的语法及知识点的讲解。
3. 听写三单元的笔记。
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本节课的重难点
1. 祈使句的用法。
2. be late for = arrive late for
3. must的用法。
4. in class与in the class
5. 辨析wear,put on,be in
6. bring与take的区别。
7. be quiet/keep quiet
8. practice的用法。
9. help的用法。
10. on school nights
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11. 辨析too many,too much与much too
12. relax的用法。
13. strict的用法。
14. remember的用法。
15. follow的用法。
16. keep的用法。
17. learn的用法。
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1. 祈使句:
定义：表示请求、命令、建议、警告等语气的句子。
结构： 肯定：
Do型： 以动词原形开头的。
Be型： Be+ 名词/形容词。
Let型： Let sb. do sth. (Let sb. not do sth.)
eg: Stand up.
Close the door.
Give me some food.
Be quiet!
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否定句：Do型和Be型在句首加Don't。
eg:Don't forget me.
Don't be late for school.
Let型否定式有两种：
Don't+let+宾语+动词原形+其他
Let+宾语+not+动词原形+其他
eg:Don't let him go.= let him not go.
有些可用no开头，用来表示禁止性的祈使句。
No smoking!禁止吸烟
No fishing!禁止垂钓
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Be a good student.
Let me help you.
Don't talk in class.
Don't arrive late for class.
Practice:
不要在走廊里跑。
不要在教室里吃东西。 你必须在餐厅吃。
不要在课堂上听音乐。我们可以在外面听音乐。
不要打架。
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2. arrive late for=be late for“做某事迟到”
Don't arrive late for school.
= Don't be late for school.
3. must是情态动词，后面加动词原形。
当must用于否定句时，mustn't意味“千万
不要，禁止”，而不表示“不必”。
eg.You mustn't be late for school.
以must开头的一般疑问句，做肯定回答还
用must,做否定回答要用needn't或
don't have to,而不用mustn't.
eg.Must I clean the room
—No,you needn't./No,you don't have to.
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4. on time : 准时
in time ： 及时.
eg: We must arrive there on time.
At last,we reached the factory in time.
5. in class表示“在课上，上课时”
in the class表示“在这个班”
类似的用法有：
in hospital住院，in the hospital在医院
at table吃饭，at the table在桌子旁
6. wear a hat (P20)
辨析wear,put on,be in
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wear是及物动词，意为“穿，戴”，表示状态 eg.He wears a black T-shirt. put on意为“穿，穿上”，强调穿的动作 eg.It's cold outside, put on your coat. be in+颜色/衣服，意为“穿着......颜色的衣服” eg.She is in red.
7. bring与take的区别。
bring“带来，拿来”，指从别处带到说话者所在
的地方，bring sth. to sp.“把某物带到某地”
eg.Please bring your book to me.
take“带走，拿走”，指从说话者所在的地方带
到远处去，take sth. to sp.“把某物带去某地”
eg.Please take your book to school.
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take ... away 把......带走
8. Oh, we also have to be quiet in the library.
(P20)
be quiet=keep quiet保持安静
9. practice the guitar(P22)
practice sth. 练习某事/某物
practice doing sth. 练习做某事
eg.I often practice my English in the morning.
He practices playing the piano every day.
10.do the dishes=wash the dishes清洗餐具
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11. help his mom make breakfast(P22)
help sb. do sth.帮助某人做某事
eg.He often helps me clean the room.
help sb. with sth.帮助某人做某事
eg.I often help him with his lessons.
12. on school nights在上学期间的晚上(P22)
13. There are too many rules.(P23)
辨析too many,too much与much too
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too many+ 可复 表示“太多......”，
eg.There are too many flowers in the garden.
too much+不可数名词 表示“太多......”
eg.I have too much homework this evening.
much too+ adj./adv. 表示“太......”
eg.This little boy is much too fat.
14. At school，we have more rules(P23)
more意为“更多的”，此处是many的比较级，
修饰可数名词复数。同时也是much的比较级，
可修饰不可数名词。
eg.She has more books than I.
He bought more milk.
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15. After dinner,I can't relax either.(P23)
辨析relax,relaxing和relaxed
relax是动词，意为“使放松”
eg.Playing games always relaxes me.
relaxing是形容词，修饰物，意为“令人放松的”
eg.This film is very relaxing.
relaxed是形容词，修饰人，意为“感到轻松的”
eg.He is relaxed after listening to music.
16. either表示“也”，用于否定句中
eg.I don't like apples either.
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15. After dinner,I can't relax either.(P23)
辨析relax,relaxing和relaxed
relax是动词，意为“使放松”
eg.Playing games always relaxes me.
relaxing是形容词，修饰物，意为“令人放松的”
eg.This film is very relaxing.
relaxed是形容词，修饰人，意为“感到轻松的”
eg.He is relaxed after listening to music.
16. either表示“也”，用于否定句中
eg.I don't like apples either.
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too表示“也”，用于肯定句和疑问句
eg.I like apples too.
Do you like apples too
17. I know how you feel.(P23)
本句中how you feel是宾语从句，做know的宾
语。如果一个完整的句子在复合句中充当宾语，
那么这个句子就叫宾语从句。注意宾语从句必
须用陈述语序。
eg.He doesn't know where the post office is.
He told me what I should read.
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18. Parents and schools are sometimes strict,
but remember, they make rules to help us.
(P23)
(1)strict是形容词，意为“严格的，严厉的”，
be strict with sb.对某人要求严格
be strict in sth.对某事要求严格
eg.She is a strict teacher.
My parents are strict with me.
Our teacher is strict in our homework.
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(2)remember表示“记住”，反义词forget
remember to do sth.记得要去做某事，说明事
情还没有做。
eg.Remember to telephone me .
remember doing sth.记得做过某事，说明事
情已经做过。
eg.I remember seeing her in the city.
中考链接
Remember____the book to the library when
you finish____it.
A.to return;to read B.returning;reading
C.to return;reading D.returning;to read
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19. We have to follow them.(P23)
follow做及物动词，意为“遵循，遵守”
follow the rules遵守规则
eg.We should follow the traffic rules.
follow sb. to do sth.跟随某人做某事
eg.I followed him to the station.
20. I have to/must keep my hair short.(P24)
keep+宾语+宾语补足语(adj.)
使......保持某种状态
eg.We must keep the room clean.
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21 ....because I have to/must learn to play the
piano.(P24)
learn to do sth.学会做某事
eg.We must learn to drive a car.
learn from...向......学习
eg.We should learn from Lei Feng.
learn... by oneself自学
eg.He learns French by himself.
用于某些谚语中
It's never too old to learn.
第三人称： 宾格+self /selves
其余人称： 形物+self/selves(反身代词）
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Homework
1. 熟读4单元单词并记忆，家长听写一遍。批阅并督促改错。
2. 背诵4单元笔记。
3. 完成4单元练习册习题。
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1. How do you get to school
I get to school on foot.
I walk to school.
2. How far is it from A to B
About 3 kilometers.
3. How long does it take you to school
4. It takes /took sb. +时间 to do sth.
It takes me an hour to do my homework.
5. hundred: 有具体数字不加S， 没有具体数字，有of加s.
6. stop: stop to do sth. 停止去做某事
stop doing sth. 停止做某事
7. What do you think of... = How do you like...
8. Thanks= Thank you for v-ing/n.
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9. no:
no+ 可数名词复数/不可数名词= not ... any...
no+可数名词单数= not...a/an...
10. get to +地点
arrive in+地点 /arrive+场所
reach+地点