Unit2 How often do you exercise SectionA Grammar Focus-3c 课件(共28张PPT) 人教版八年级上册

(共28张PPT)
人教新目标Go For It八年级英语上册
Unit2 How often do you exercise SectionA Grammar Focus-3c
Learning aims:
Useful expressions: at least, stay up, how often
2. Sentences：
① —What do you usually do on weekends
—I always/sometimes/...
② —How often... —I ... once a month/...
③ —Do you… —Yes, I do./No, I don't.
Game
She usually plays the guitar on weekends.
She sometimes plays the guitar on weekends.
She always plays the guitar on weekends.
比一比，看谁说得又快又好？
100%
≥ 80%
≥ 20%
Wise men learn by other men's mistakes; fools by their own
Grammar Focus
________you___on weekends I _______________.
(总是锻炼)
________they ___on weekends They _____(经常) help____ housework.
___________she___on weekends She_____________ shopping.
她有时去购物。
_____________you go to the movies I go to the movies maybe
______________.(一月一次)
____________ he watch TV He___________________.
他几乎不看电视
___ you go shopping No, I_____ go shopping.
What do do
often
with
always exercise
What do do
What does do
sometimes goes
How often do
once a month
How often does
hardly ever watches TV
Do
never
Wise men learn by other men's mistakes; fools by their own
在答句中，频度副词必须放在助动词前。
—Do you often go there？你常去那里吗？
—Yes, I often do.是的，我常去。
never(从不)，seldom(很少，不常)用于句首时，句子要用倒装形式以加强语气。
Never have I been there.我从未去过那里。
Seldom do I watch TV.我很少看电视。
Wise men learn by other men's mistakes; fools by their own
1. how often 意为 “__________”，是用于提问表示 ____ 的特殊疑问词组。其答语应为表示 _____ 的副词或副词词组。句子的时态一般是_____________，也可以是一般过去时。
Grammar
多久一次
对频率提问
频率
频率
一般现在时态
Wise men learn by other men's mistakes; fools by their own
对划线部分提问：
e.g. She usually comes to see her grandpa four times a month. （呼和浩特市中考题）
_____ _____ _____ she usually come to see her grandpa
解析：How often does。划线部分four times a month涉及频率，应用How often提问，同sometimes、usually、often、always、once、twice、once a week、twice a year等。句中动词comes为单三式，改为疑为句时应添加助动词does，动词还原。
Wise men learn by other men's mistakes; fools by their own
对频率提问
对频率提问用how often，意为“多久一次”。
He always goes to the park.
→How often does he go to the park
其他表示频率的短语
every day每天
once a week 一周一次
twice a month 一个月两次
three or four times a year 一年三到四次
Wise men learn by other men's mistakes; fools by their own
always
usually
often
sometimes
hardly ever
never
从不, 从未
很少
有时
经常, 常常
通常, 一般
总是
100%
seldom
80%
60%
30%
10%
5%
0%
几乎不
2. 频度副词
Wise men learn by other men's mistakes; fools by their own
频度副词在句中的位置
1．频度副词用在be动词后。
He is always late for school.他总是上学迟到。
2．频度副词用在实义动词前。
My father usually walks home.我的父亲经常步行回家。
3．频度副词用在助动词与实义动词之间。
I will always love you.我将永远爱你。
4．频度副词用在ought to之间。
You ought often to write to your mother.你应该常给你母亲写信。
Wise men learn by other men's mistakes; fools by their own
【辨析】 maybe 与may be
maybe是副词，在句子做状语。may be 是情态动词may 与动词原形be 一起构成句子的谓语动词意为“可能是”，它们有时也可互换。
e.g. 或许它们在你的书包里。
_______ they are in your schoolbag.
They _____ ___ in your schoolbag.
Maybe
may be
Wise men learn by other men's mistakes; fools by their own
——We go shopping once a week.
—— How often do you go shopping
Warming-up:
一周一次
——What do you usually do on weekends
——I always exercise.
——How often do you exercise
——I exercise twice a week.
总是
一周两次
Wise men learn by other men's mistakes; fools by their own
maybe 意为“大概；或许；可能”，是副词，常位于句首或句中。
e.g. 或许他们将去海滩度假。
_______ they are going to the
beach for vacation.
Maybe
Wise men learn by other men's mistakes; fools by their own
He sometimes exercises on weekends.
He hardly ever exercises on weekends.
He never exercises on weekends.
0%
≥ 20%
＜ 5%
Wise men learn by other men's mistakes; fools by their own
还有一些短语也可以表示频率， 如：
once a week, twice a day, four times a week, two or three times a year, （单位时间内的频率）
every other day 每隔一天等。
翻译：你多久去游泳一次？一个星期三次。
_____ _____ do you ___ __________
_____ _____ __ ______.
How often
go swimming
Three times a week.
Wise men learn by other men's mistakes; fools by their own
——What do you usually do on weekends
——I often use the Internet.
—— How often do you use the Internet
—— I use the Internet four times a week.
经常
一周4次
Wise men learn by other men's mistakes; fools by their own
How often does he/she do...
Wise men learn by other men's mistakes; fools by their own
3a
翻译句子。
1. 有钱人未必总是幸福的。
The rich are not ___________ happy.
2. 他通常7点钟去学校。
He __________ goes to school at seven o’clock.
3. 他上学经常迟到。
He is _________ late for school.
4. 这些天我几乎不出门。
I __________________ go out these days.
5. 我父母从不吵架。
My parents ________ quarrel with each other.
6. 天气忽冷忽热。
It is _______________ cold and _______________ hot.
always
usually
often
hardly ever
never
sometimes sometimes
Wise men learn by other men's mistakes; fools by their own
1. ---_____ do you go to the movies
---Once a week.
A. How long B. How soon
C. How often D. How much
2. ____ I’m not very healthy.
A. Maybe B. May be C. May D. Can
3. I have a ______ habit.
A. health B. healthy
C. healthily D. healthily
C
A
B
Wise men learn by other men's mistakes; fools by their own
在一般现在时的一般疑问句中，当主语为第三人称单数或复数时，需要句子前加助动词Does或Do 。
e.g. 他们通常在周未锻炼吗？
___ they often _______ on weekends
她一周上网二次吗？
____ she ____ the Internet twice a week
Do exercise
Does use
Wise men learn by other men's mistakes; fools by their own
exercise
brush your teeth
read English books
use the Internet
go to the movies
eat junk food
every day
twice a day
once a month
once a week
twice a week
three times a week
Q: How often
does he\she
do they
Wise men learn by other men's mistakes; fools by their own
at least 意为“至少，不少于；起码”，是副词词组，一般指在数量或程度上。
e.g. 你必须至少一周打扫你的房间一
次。
You have to clean your house
__ ____ once a week.
at least
Wise men learn by other men's mistakes; fools by their own
ExercisesExercises
英汉互译
1. 去看电影 ___________________
2. 运动 ____________________
3. 看电视 ____________________
4. 读英语书 ___________________
5. 上网 ___________________
6. 购物 ____________________
7. 多久一次 ____________________
8. every day ____________________
go to the movie
watch TV
read English books
go to exercise
use the Internet
go shopping
how often
每天
Wise men learn by other men's mistakes; fools by their own
9. once a week ______________
10. twice a week ______________
three times a week ______________
three or four times a week
______________
13. once a month _______________
14. twice a month _______________
一周一次
一周两次
一周三次
一周三到四次
一个月一次
一个月两次
Wise men learn by other men's mistakes; fools by their own
Lin Ying reads English books twice a week. Hu Tao goes to English Club twice a week. Su Lei watches English movies once a week. Ma Li writes to a pen pal twice a month. Hu Tao keeps an English diary every day. I think Hu Tao is the best English student.
Report
Wise men learn by other men's mistakes; fools by their own
单项选择题
Exercises
1. —_____ do you go shopping
—Once a week.
What time B. How long
C. How often D. How soon
2. It’s past the appointed time（过了约定的时间）。______ he isn’t coming.
Maybe B. May be
C. Can be D. Must be
C
A
Wise men learn by other men's mistakes; fools by their own
Homework
Do an activity survey about the students in your class. Then write a short passage.