Unit 2 How often do you exercise? 知识点复习课件（43张PPT） 人教版英语八年级上册

(共43张PPT)
人教版八年级上册
Unit 2 How Often Do You Exercise
01
语法
How often do you exercise
多久一次
Hardly ever. 几乎从不
回答
2. Once a week. 一周一次
1.定义：频度副词表示事情发生的频率，可用来回答how often引导的问句
2. 常见频率副词：
always＞usually＞often＞sometimes ＞ hardly ever (seldom) ＞ never
3. 位置：
实义动词前面，be动词/助动词/情态动词后面
e.g. They hardly ever watch TV.
They are always late for school.
频率副词
sometimes
横看成岭侧成峰
sometimes 频度副词 有时 表示动作发生的不经常性，多与一般现在时连用，对它提问用how often
some times 名词短语 几次；几倍 其中time是可数名词，意为“次，倍”，对它提问用how many times
sometime 副词 某个时候 表示某个不确切或不具体的时间，常用于过去式或将来时，对它提问用when
some time 名词短语 一段时间 句中谓语动词常为延续性动词，对它提问用how long
Sometimes I get up late.
I have read the story some times.
I decided to try paragliding with my sister sometime next week.
They will live in Beijing for some time.
口诀
分开“一段时间” （some time）
相聚在“某时” （sometime）
“有时”相聚加-s （sometimes）
“几次”分开带-s （some times）
hardly/hard
乱花渐欲迷人眼
hardly 副词 意为“几乎不”
He hardly works.
hard 副词 意为“努力地；困难地；猛烈地” He works hard.
It rained hard.
形容词 意为“努力的；困难的；硬的” There are some hard questions on the exam paper.
This is a hard bed.
次数 a week/month/year.
Once a week
次数： once 一次 twice 两次 three times 三次 ….
I exercise once a week.
How often do you exercise
How many times do you exercise a week
1. He is the first to get to school every day. He is ______ late for school.
always B. often C. sometimes D. never
2. -- Ms. Lin is very popular with the students. -- Yes. Her classes are ____________ lively and interesting.
always B. sometimes C. hardly D. never
3. We _____ play sports on school days. You know, we don’t have enough time.
often B. usually C. hardly D. ever
4. Can you speak a little louder I can ______ hear you.
A. hard B. really C. hardly D. clearly
Practice
02
动词
exercise
exercise
exercise 动词 锻炼
He hardly exercises.
名词 [不可数] 锻炼
take exercise
[可数] 体操；练习题
do morning exercises
do eye exercises
do grammar exercises
花费
花费
spend 花费（时间、金钱）； 度过 主语是人
spend on sth.
spend (in) doing
pay 支付（金钱） 主语是人 pay 钱for 物
take 花费（时间） it作形式主语，真正的主语是动词不定式 It takes/took sb. some time to do sth.
cost 花费（金钱） 主语是物 Sth. costs sb. some money
ask
询问
ask sb. about sth. 询问某人关于某事
We asked students about their free time activities.
2. 请求，要求
ask sb. to do sth. 让某人做某事
ask sb. not to do sth.让某人不要做某事
The teacher asks us to listen to her carefully.
The teacher asks us not to talk in class.
3. 寻求
ask for help 寻求帮助
ask sb. for sth. 向某人寻求某物
We ask the teacher for help.
help
v. 帮助
help sb. with sth. ＝ help sb.（to）do sth.
帮助某人做某事
I often help him with his English.
＝ I often help him (to) learn English.
n. 帮助
with one’s help= with the help of sb.
在某人的帮助下
With our teacher’s help
= With the help of our teacher
have to/ must
have to/ must
have to 不得不 侧重客观需要 有人称、数和时态的变化
must 必须 侧重主观上自己认为有必要 没有人称和数的变化
03
名词&代词
意为“百分之……”，
常用于“基数词＋percent”结构
10 percent 百分之十
无复数形式，与名词连用时后需＋of
10 percent of the students 百分之十的学生
percent of 后接名词或代词做主语时，谓语动词的单复数形式要根据of后的名词或代词而定
10 percent of the students like reading books. 八分之十的学生喜欢读书
percent
none/no one/ nothing
none（没有一个；毫无） 既可指人，也可指物 可单独用，或和of连用，后跟不可数名词或可数名词复数
谓语动词用单数或复数（看名词）
no one（没有人） 只能指人 一般单独使用，不和of连用 谓语动词用单数
nothing（没有什么） 只能指物 单独使用 谓语动词用单数
None of us went to the park.
No one wants to leave.
Nothing is impossible.
04
连词&介词
although
连词
意为“虽然；尽管；即使”，相当于though，引导让步状语从句。
同一句子中although 与but不能连用。
She kept on working although she was tired.
① 介词，意为“通过，靠”，表示方法、手段，其后接名词、代词或动词 -ing形式。
Mr. Green makes a living by teaching.
② by＋交通工具，意为“乘/驾/坐……”
I went to Beijing by plane.
③ by＋时间， 意为“到……时为止；在……以前”
I must be in bed by ten.
④ by＋地点，意为“在……旁边”
We live by the sea.
by
意为“例如；像……一样”
多用于来列举同类人或事物中的几个。
He has many hobbies, such as swimming and reading.
such as
05
形容词&副词
How疑问词荟萃
How疑问词荟萃
how often 多久一次 提问频率 How often do you exercise
how much 多少；多少钱 提问数量或价格 How much is the sweater
how many 多少 提问数量 How many are these birds
how long 多长；多久 提问长度或时间长短 How long does it take to get to Shanghai
how far 多远 提问距离 How far is it from here to the park
how soon 多久以后 提问将来的时间 How soon will they come back
how old 多大年纪 提问年龄 How old are you
--________do you go to the zoo
--Once a month.
--________ monkeys are there in the zoo
--________ is it from Beijing to Tianjin
-- It’s 92km.
-- ________ are the apples
-- They are 10 yuan.
Practice
①free 意为“空闲的；有空的”，还可以表示“免费的；自由的”。
I’ll be free next week.
The tickets are free.
You’re free to come and go.
free / full
②full 意为“忙的”，还可以表示“满的；饱的”。
Her life is so full that she doesn’t have time for hobbies.
The bottle is full of water.
I can’t eat anymore, I’ m quiet full.
free / full
maybe & may be 辨析
maybe 或许；大概；可能 副词，作状语，常位于句首
may be 可能是 情态动词＋动词原形结构，在句中作谓语
Maybe you are right ＝ You may be right.
almost, nearly都是副词，意为“几乎，差不多”，almost之前不可用very，not等词修饰，但在no, none, never, nothing等否定词前可用almost。
There is almost nothing in the room.
The car is pretty nearly new.
nearly & almost
be good for/at/ with/ to
be good for 对…有好处 Doing morning exercises is good for you.
be good at 擅长 I’m good at playing basketball.
be good with 善于应对… He is good with children.
be good to 对…友好 She is always good to me.
Doing eye exercises ________ your eyes.
I ________ playing basketball.
He ________ his classmates.
Practice
too/either/also
too 也 常用于肯定句 位于句末，其前常加逗号
either 也（不） 常用于否定句 位于句末，其前常加逗号
also 也 常用于肯定句 位于句中，助动词/be/情态动词之后，实意动词之前
Lucy likes red. I like red, too.
If he doesn’t go, I won’t, either.
They also agree with me.
06
句式
根本不; 一点也不。
at all 可位于句末，也可跟在否定词后。
It wasn’t difficult at all. 这一点也不难。
He isn’t tired at all.
He’s not at all tired. 他一点也不累。
not at all
口语中单独说 not at all, 可用来回答感谢或道歉。
A：Thank you very much. 多谢你了。
B：Not at all. 不客气
A：I’m sorry to keep you waiting. 对不起，让你久等了。
B：Oh, not at all. 噢，没关系。
not at all
It is ＋adj. for sb. to do “对某人来说做某事是……的”，形容词表示事物的特征特点，如 easy, hard, important, impossible
It is ＋adj. of sb. to do 形容词表示人物的性格、品德，如 kind, nice, clever, foolish
Eg: It is important for us to learn English well.
It is kind of you to help me.
It is ＋adj. ＋to do
It’s good for us ________(play) sports every day.
It’s clever ________ you to work out this question.
翻译句子：读书是有用的。
Practice
THANK YOU！