Unit 4 Do it yourself Grammar. 课件(39张PPT)

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名称 Unit 4 Do it yourself Grammar. 课件(39张PPT)
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更新时间 2022-10-23 15:16:55

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(共39张PPT)
译林版·八年级上册
Unit 3 Do it yourself
Grammar
学 习 目 标
学习本课时新单词及短语:cut, sentence, on the other side of
1
3
学会用should 和had better来提出建议。
学会运用祈使句表达指令。
2
Grammar A
Play a game
1. Stand up.
2. Sit down.
3. Put up your hands.
5. Come here.
7. Go back to your seats , please.
Please 的作用:以使语气更加缓和或放在客气。
句前或句后均可以。
6. Touch your nose.
4. Jump twice.
课 堂 导 入
Don’t smoke.
Don’t talk loudly.
Don’t take photos.
Can you guess
what these signs mean
语法探究
● 1 祈使句
祈使句是表示请求、给予命令或指示的句子。祈使句的主语是________(听话者),常________,把后面的动词置于________,并且谓语动词一律用________。祈使句末用叹号或句号。
(1)祈使句的________形式,
①.Do型动词原形+其他。
如:Pass it to me. 把它递给我。
原形
you
省略
句首
肯定
② Be型(以be开头),例如:
Be quiet!安静!
Be careful小心!
③ Let型(let sb do sth),例如:
Let me try. 让我试试看。
Let’s look at the map. 让我们看看地图。
● let’s是let us的简略式。
(2)祈使句的________形式
①. Do not/Don't+动词原形+其他。如:
Don't open the door, please. 请不要开门。
Don't be late again. 不要再迟到了。
注意: please放在句首或句尾时不影响动词和整个句子。
② . 在公共场合的提示语中,常用的结构
“No+名词 / v.-ing” ,表示“禁止做某事”
No smoking! 禁止吸烟
No photos! 禁止拍照
No parking! 禁止泊车
否定
③. Never + 动词原形 + 其他
不要再那样做了。
Never do that again.
(3)祈使句的________________
a.若陈述部分为祈使句,反意疑问部分通常用____________(无论句首是什么动词,是肯定句还是否定句,都用will you)。
反意疑问句
will you
b.若祈使句以let's 开头,反意疑问部分用____________。 如:
Open the window, will you?打开窗户,好吗?
Don't open the window, will you?不要开窗,好吗?
Let's play with snow, shall we
我们去玩雪吧,好吗?
(Let's是表示第一人称的祈使句,包括对方,所以主语是we)
shall we
注意:
表示请求、劝告的祈使句还常常在句前或句末加上please, 构成句式:Please …或 …, please. 以使语气更加缓和或客气。
例如:
Please stand up.
Stand up, please. 请站起来。
Please have a rest.
Have a rest, please. 请休息一下。
祈使句的回答
祈使句通常表示将来要发生的动作,所
以回答时,一般用will或won’t。
— Don’t forget to do your homework.
— I won’t.
— Remember to turn off the lights.
— I will.
口诀
祈使句,无主语,只用动词就可以.
表示请求或命令,加上please表客气。
如果变成否定句,Don’t开头是规律。
No talking!是警示,祈使句用法要牢记。
Millie is teaching her classmates how to make cards to help them remember things better. Look at the pictures and help Millie complete the instructions.
How to make cards
_____ out pieces of card with a pair of scissors.
Cut
cut draw give keep look try write
_____ some words or a sentence on each card.
Write
cut draw give keep look try write
_____ a picture about the words or sentence on the other side of the card.
Draw
cut draw give keep look try write
_____ at the picture and ___ to remember what is on the other
side.
Look
try
cut draw give keep look try write
Please _________ (not) up. ____
trying, and you will find you can remember things better.
don’t give
Keep
cut draw give keep look try write
Grammar B
注意:
当我们给他人提建议时,可以用had better和should,表示“最好”或“应该”做某事, had better的语气比should强一些。
You had better turn off the lights before leaving the classroom.
离开教室前你最好先把灯关了。
You should exercise more.
你应该多锻炼。
had better (常简略为’d better),是固定词组,后面必须跟动词原形。构成:had better do sth. 。
You’d better go to hospital at once.
你最好立即去医院看病。
Tom, you’d better go there today.
汤姆,你最好今天去那儿。
had better 的否定式是将not直接放在had better的后面 (had better not do sth.)。
You had better not miss the last bus.
你最好不要错过末班公共汽车。
should 后面也要跟动词原形,且没有人称和数的变化。
You should stop smoking.
你应该戒烟。
should 的否定式是should not/shouldn’t。
You shouldn’t drink and drive.
你不应该喝酒后开车。
DIY advice
Suzy is giving DIY advice to her classmates. Read the advice below. Help Suzy make sentences with should (not) or had better (not).
a begin your work without reading them
b join a DIY club to learn more about it
c be patient
d buy some to learn more about it
e play with them when you do DIY jobs
1. There are many useful books about DIY.
You should / had better buy some to learn more about it.
You should / had better be careful when you use them.
4. Scissors can be dangerous.
You should/ had better be patient.
5. Sometimes it’ll take time to do a DIY job.
You should / had better be careful when you use them.
4. Scissors can be dangerous.
You should/ had better be patient.
5. Sometimes it’ll take time to do a DIY job.
[观察] Cut the cake into two exact halves.把蛋糕切成同样大小的两半。
词汇点睛
●cut vt. 剪下,切下,割下
[搭配] ______________剪出  ______________砍倒 
cut up 切碎  cut one's hair 理发 
cut in line 插队 cut…short把……缩短
[探究] cut 为________动词,其过去式和过去分词均为________,
现在分词为________。
cut down
cut out 
及物
cut
cutting
句型透视
● Draw a picture about the words or sentence on the other side of the card.
在卡片的另一面画一张有关单词或句子的图画。
[探究] ________________意为“在……的另一边”。
on the other side of
词条 含义及用法 例句
other 可作________或________。作形容词时,意为“别的,其他的”,表示泛指。 Do you have any ________ questions
你还有其他问题吗?
形容词
代词
other
词条 含义及用法 例句
the other 指“两个人或物中的另一个”时,只能用________,不能用________,此时的other用作________。 He has two daughters. ________ is a nurse, and ________ is a worker.
他有两个女儿,一个是护士,另一个是工人。
代词
the other
another
One
the other
词条 含义及用法 例句
others others相当于“________+________复数”,泛指“另外几个;其余的人或物”。others在句中可作________和________。 ________ of us like singing and dancing, and ________ go in for sports.
我们中的一些人喜欢唱歌和跳舞,其余的喜欢体育活动。
other
名词
主语
宾语
Some
others
词条 含义及用法 例句
the others 意为“其他东西,其余的人”,________某一范围内除去一部分后“其他的(人或物)”。 Two boys will go to the zoo, and ____________ will stay at home.
两个男孩将去动物园,其余的待在家里。
特指
the others
词条 含义及用法 例句
another 既可作限定词,又可作代词,只能用于________或更多的人或物中,________同类事物中的三者或三者以上中的“____________”,只能代替或修饰_______________名词。 I don't like this one.Please show me another.
我不喜欢这个,请给我看看另一个。
单数可数
三者
泛指
另一个
Part A: learn how to give instructions
Please do / Do sth.
Please don’t do / Don’t do sth.
Part B: learn how to give advice
肯定: should /had better +V原形
否定: should not/had better not + V原形
肯定:
否定:
Summary
完成句子
1. 你应该在南京换火车。
_________________ change trains at Nanjing.
2. 你最好在下雨前回家。
__________________________ before the rain starts.
3. 现在你最好别打棒球了。
__________________________ baseball now.
4. 不要把金鱼放在阳光下。
_____________ the goldfish in the sun.
You should
You'd better go home
You had better not play
Don’t put
语法训练
谢谢
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