Unit 8 Have you read Treasure Island yet?Section A 现在完成时和一般过去时的区别 how many 和how much用法区别（共有PPT25张）

(共25张PPT)
八年级下册第八单元
Unit 8 Have you read Treasure Island yet
辨析现在完成时和一般过去时的区别
目录
CONTENTS
2
past
now
The girl opened the door.
The door is open now.
The girl has opened the door.
导入
表示过去发生的动作对现在造成了影响和结果
past
now
future
She wrote a word A on the blackboard .
There is a word A on the blackboard now.
She has written a word A on the blackboard.
导入
表示过去发生的动作对现在造成了影响和结果
现在完成时含义
表示过去发生并且已经完成的动作对现在造成的影响和结果
past
now
Yesterday , we
cleaned the
classroom.
Now , the classroom
is clean .
强调过去发生的动作对现在产生的结果或影响
We have cleaned the classroom.
知识讲解
现在完成时结构
知识讲解
肯定句：主语+have /has +动词的过去分词
(第三人称单数用has，其他人称用have）
I have had noodles.
He has had noodles.
否定句：主语 + have/has +not +动词过去分词
I have not /haven’t had noodles.
He has not / hasn’t had noodles.
现在完成时结构
知识讲解
一般疑问句：Have /Has +主语+动词的过去分词
Have you had noodles
Has he had noodles
肯定答语：Yes, 主语+have /has
Yes , I have.
Yes , He has.
否定答语：No, 主语+haven’t /hasn’t
No , I haven’t.
No , He hasn’t .
现在完成时和一般过去时的区别
难点突破
now
She has written a word A on the blackboard.
She wrote a word A on the blackboard just now.
难点突破
难点突破
past
now
now
past
He has had lunch.
He is full now.
He had lunch just now.

一般过去时强调的是过去发生的动作。与现在没有关系，后面常有表过去的时间状语,如yesterday,lastweek/year/...，等等。
现在完成时表示过去发生的动作对现在造成的影响，强调的是现在的情况。already， yet，never，ever，just，before，so far, these days等
课堂练习
11
She has already had breakfast.
She had breakfast yet .(变否定句）
she had breakfast yet (变一般疑问句）
Yes，she .（肯定回答）
No,she . (否定回答）
hasn’t
Has
hasn’t
has
12
难点巩固
I .They to Hong Kong last year .( go)
2.He the classroom already .(clean)
3.She reading the book yet . (not finish)
4.I a new computer last week. (buy)
5.Tom the film before . (see)
went
has cleaned
hasn’t finished
bought
has seen
【课堂小结】
小结
过去时
现在完成时
How many
How many
与
与
How much
How much
A: Can I help you？
B: Yes，please! I want some apples.
A:How many apples do you want
B: I want three apples. And I want some beef , too.
A: How much beef do you want
B: A kilo, please. These oranges are good. How much do they weigh
A: A kilo.
B: I will take them. How much are they
A: Ninety-five yuan.
B: Here’s the money.
A: Thanks.
情景导入
聚焦
Focus
how many 和 how much
1
情境创设
How many apples do you want
How much meat do you want
How many oranges can you see
How much milk do you drink every day
how many 和 how much 都可以对数量进行提问，表示“多少”
How many + 可数名词复数 + 一般疑问句
How much + 不可数名词 + 一般疑问句
--How much is the T-shirt
--It 's fifty yuan.
--How much is the beef
--It ’s seventy yuan a kilo.
--How much are the shoes
--They are sixty yuan.
2
情境创设
how much可以用来询问物品的价格，表示“多少钱”
How much is + 单数名词/ 不可数名词
How much are + 可数名词复数
How much does the dog weigh
--How much is three plus two
--It’s five.
How much do you know about Beijing
3
情境创设
3+2=
how much可以用来询问体重、数字的计算结果和对事物的了解或喜爱程度等
用how many 和 how much 填空。
(1)___________ apples would you like
(2)___________ rice is there in the bowl
(3)____________do you know about America
(4)___________ does the elephant weigh
(5)___________ is the schoolbag
It’s one hundred yuan.
巩固练习
How many
How much
How much
How much
How much
how many 和 how much
都表示“多少”
课堂小结
BYE-BYE