人教版八年级上册 Unit 2 How often do you exercise?Section B 2a-2e 课件 (共15张PPT)

(共15张PPT)
Unit 2 How often do you exercise
Section B
Period 2（2a—2e）
2a
Rank these activities according to how often you think your classmates
do them (1=most often, 6=least often).
watch TV go to the movies
play computer games
exercise or play sports
use the Internet
go camping in the country
Translate and write these numbers in English.
1
2
3
4
6
10
13
15
17
19
20
30
40
60
90
32
45
67
85
98
one
two
three
four
six
ten
thirteen
fifteen
seventeen
nineteen
twenty
thirty
forty
sixty
ninety
thirty-two
forty-five
sixty-seven
eighty-five
ninety-eight
Read 2b quickly and find out all the numbers.
Paragraph2：
Paragraph3：
Paragraph4：
fifteen forty-five four six
twenty one three
ninety ten three four
two one three thirteen
four six eighty-five
fifteen percent
forty-five percent
twenty percent
ninety percent
four to six times
three or four times
one to three times
百分数用基数+ percent表示 50％ fifty percent　百分之五十 3％ three percent　百分之三 　 0.12％ zero point one two percent 百分之零点一二
这里的percent前半部per表示“每一”，cent这一后半部分表示“百”，所以百分之几中percent不用复数形式。
百分比英语表示法
2b
Read the article and complete the pie charts on Page 14.
3
4
6
4
6
3
15
10
13
2
85
90
20
20
45
2c
Read the article again and answer the questions.
1. How many percent of the students do not exercise at all
2. How many percent of the students use the Internet every day
Twenty percent do not exercise at all.
Ninety percent students use the Internet
every day.
3. How often do most students watch TV What do they usually watch
4. What does the writer think is the best way to relax Why
5. Do you think the students at No. 5 are healthy Why or why not
Most students watch TV every day.
They usually watch sports and game shows
He thinks the best way to relax is through exercise.
Because it is healthy for the mind and the body.
No, I don’t think so. Because they spend
too much time on the television and the Internet.
Fill in the blanks.
1、Twenty percent do_______exercise_______ _______.
(一点也不)
2、We all know that many students often
_______ _______.(上网)
3、The other ten percent use it _______
_________ three or four times a week. (至少)
4、Exercise_______ _______playing sports is fun.( 例如)
5、Remember_______ _______ _______ _______ .( 旧习难改)
not
at all
go online
at
least
such as
old habits die hard
2d
According to the article and the pie charts, write sentences with the percentages using always, usually or sometimes.
1. 90%: __________________________________
2. 85%: __________________________________
3. 45%: __________________________________
4. 10%: __________________________________
5. 13%: __________________________________
6. 2%: ___________________________________
Ninety percent of the students always use the Internet.
Eighty-five percent of the students always watch TV.
Forty-five percent of the students usually exercise.
ten percent of the students usually use the Internet.
Thirteen percent of the students usually watch TV.
Two percent of the students sometimes watch TV.
2e
Choose one of these free time activities or think of your own. Then ask your classmates how often they do this activity and make a pie chart. Show the pie chart to your class.
play computer
games
read books
go shopping
draw pictures
play sports
How often do you … Names of classmates
1-3 times a week
4-6 times a week
every day
Early to bed,
early to rise,
makes a man healthy, wealthy and wise.