Unit 2 How often do you exercise? 单元语法(共27张PPT) 2024-2025学年八年级英语上册（人教版）

(共27张PPT)
Unit 2 How often do you exercise
八年级上册
CONTENTS
02
01
次数的表达
频度副词
Unit 2 How often do you exercise
03
“How often…”
频度副词
频度副词表示动作发生或状态存在的频率。
常用的频度副词有：
always-- 总是 usually--通常
often-- 经常 sometimes-- 有时
seldom--不常 rarely-- 很少
never--从不 hardly--几乎不
经常使用的副词频度柱状图
always意为“总是”，与进行时态连用时，可以表示赞扬，也可以表示讨厌等感彩。
usually可以指通常的动作，但是侧重已经形成的习惯，它是从已经形成的角度来说明动作。
often是指经常性的动作，意思为“常常, 经常”。
sometimes意思为“有时，不时”，表示次数较少常常与一般现在时或一般过去时连用。
hardly意思为“难得, 几乎从来不”，所表示的次数非常少。
never意思为“决不, 从未”，表示一次也没有。
频
度
副
词
频度副词通常与一般现在时连用,在句中的位置为主语或助动词之后,实义动词动词之前。
频度副词的位置
I always get up early.
She often helps her mother .
They sometimes go skating.
we hardly ever sing.
I never fly a kite.
频率副词通常
在实义动词之前
I’m always happy to see her.
She is sometimes very busy.
I will never forget this lesson.
They are often kind to us.
He can hardly get up at 6 o’clock.
频率副词用在be动词，助动词或情态动词之后
I always get up at 6am to go for a run.
我总是早上6点起来跑步。
I usually have coffee for breakfast. 我通常早餐喝咖啡。
I often go to the gym to work out after work.
我经常下班后去健身房锻炼身体。
Sometimes I feel like I just need to be alone.
有时候我觉得我只需要独处。
There is hardly any free time. 几乎没有什么空闲时间。
They never listen to my advice. 他们从来没有听我的建议。
读一读
课本练一练
注意观察副词的位置- 实义动词的前面
拓展练一练
1. Does Alice often work until 2 a.m. -No, she ____ does.
A. nearly B. certainly C. seldom D. always
2. –I don’t know you take a bus to school.
-Oh, I ___ take a bus, but it is snowing today.
A. hardly B. never C. sometimes D. usually
3. -Were you often late for school last term, Tom
-No, ____. I got to school early every day.
A. Always B. Usually C. Sometimes D. Never
C
B
D
拓展练一练
4. -John sings so well. Has he ever been trained
-No. He learns all by himself. He _____ goes to any training class.
usually B. often C. never D. even
5. --- _____ does your mother go for a walk
--- Every afternoon.
A. How long B. How much C. How often D. How many
C
C
拓展练一练
选词填空(句子选词填空)
always every day often sometimes never hardly ever
6. He ________________gets up at six o'clock, seven days a week.
7. How do you go to the movies
8. It rains here. It's usually sunny and warm.
9. Some of my friends exercise every day and hardly ever eat junk food, but most of them eat junk food .
10. I can't swim. So I go to the beach to swim. Sometimes I go there with my friends to run.
often
hardly ever
never
always
every day
次数的表达
一次 once
两次 twice
三次及以上:
基数词+times
three times
twenty times
次数的表达
一天一次
一天两次
一天三次
一周一次
一周两次
一周三次
twice a week
twice a day
three times a day
once a week
once a day
three times a week
次数的表达
一月一次
一月两次
一月三次
一年两次
五年一次
四年两次
once every five years
twice a month
three times a month
twice a year
once a month
twice every four years
次数的表达
每天
每周
每年
每月
每个早上
每周末
every morning
every week
every year
every month
every day
every weekend
次数的表达
拓展练一练
根据句意翻译下列短语。
I drink milk and eat vegetables __________________ .
我一天喝一次牛奶。
I exercise __________________.
我每周锻炼一次。
I eat McDonald’s __________________.
我一个月吃两次麦当劳。
I visit my grandmother __________________.
我一年去看奶奶四次。
four times a year
twice a month
once a week
twice a day
“How often…”的用法
How often 的用法
How often do you have PE class 你多久上一次体育课 I have PE class twice a week.
一周两次。
How often does your aunt visit your parents 你姑姑一般多久来看你爸妈一次？ She hardly ever visit them.
他几乎不来看他们。
Grammar Focus
对频度副词进行提问常用how often, 表示“多久一次”。
一般是对一般现在时态的提问，
结构：how often +do/does+主语+动词短语？
常见的how疑问词辨析
How soon will he be back 他多久能回来？ He will be back in a month.
他一个月后能回来。
How long did it take you to clean the house 你打扫房子用了多久？ It took me half an hour to clean the house. 我打扫这房子用了半小时。
How often does your mother do the washing 你妈妈多久洗一次衣服？ She does it every day.
她每天都洗。
how soon 多 久（以后）
how long 多 久
how often 多久（一次）
课本练一练
does
Do
do
Does
do
Do
熬夜
做运动
答案：1.C 2.f 3.e 4.a 5.b 6.d
课本练一练
How often do you help with housework
What do you usually do on weekends
How often does your best friend exercise
What do you usually do after school
Twice a week.
I usually go swimming on weekends
Once a week.
I usually go fishing after school.
拓展练一练
根据回答填写疑问词
A：___________did he stay here
B：About two hours.
A： ___________ do you play table tennis
B：Once a month.
A： ___________ will he be back
B：In an hour.
　
How often
How long
How soon
THE END