Unit 2 How often do you exercise? 重点解析与练习 2023-2024学年人教版英语八年级上册（无答案）

Unit 2 How often do you exercise？
短语
go to the movies=go to the cinema看电影
on weekends=at weekends(泛指）在周末看电影
on the weekend=at the weekend 在这个周末，在本周末
use the Internet 使用互联网
have lessons 上课
help with housework 帮忙做家务
hardly ever几乎从不
swing dance 摇摆舞
watch TV看电视
stay up(late)熬夜（到很晚）
go shopping 去购物
play sports=do sports 做运动
twice a week 每周两次
at least至少；不少于；起码
once a week 每周一次
go to bed early 早睡
junk food垃圾食品
go to the dentist 去看牙医
junk food 垃圾食品
every night 每晚（作状语）
16-year-old 16岁的
how often 多久一次
a lot of 许多，大量
go camping 去野营
free time activities 课余活动
more than=over 多于
teeth cleaning 洗牙
not...at all一点也不
fast food 快餐
go online=surf on the Internet 上网
the answer to...······的答案
less than 少于
a few几个，一些
one to three times a week一周一至三次
such as例如；像······这样
most of 大部分
old habits die hard 旧习难改
have to do不得不做
句型
1. How many hours do you sleep every night 你每晚睡多少个小时？
2. I have piano lessons twice a week. 我每周上两次钢琴课。
3. My mother wants me to drink milk. She says that it’s good for my health.
我母亲要我喝牛奶。她说对我健康有好处。
Last month we asked our students about their free time activities.
上个月我们问了学生有关空闲时间的活动。
We found that only fifteen percent of our students exercise every day.
我们发现仅仅百分之十五的学生每天锻炼。
Twenty percents of our students do not exercise at all.
20%的学生根本不锻炼。
We all know that many students often go online, we were surprised that ninety percent of them use the Internet every day.
我们都知道很多学生经常上网，我们很吃惊他们中有百分之九十的人每天上网。
Most students use the Internet for fun and not for homework.
大多数学生上网是为了娱乐，而不是为了做作业。
9. The answers to our questions about watching television were also interesting.
对我们提出的有关看电视的问题的回答也颇有意思。
10. Although many students like to watch sports, game shows are the most popular.
虽然很多学生喜欢看体育节目，但游戏节目依然是最受欢迎的。
11. It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.
通过上网或看游戏节目来放松很好，但是我们认为最好的放松方法还是通过锻炼。
三、重难点讲解
1. on weekends
意为“在周末”，泛指每个周末，on the weekend则表示“在这个周末”，特指某个周末；在英式英语中，在周末也可以用at the weekend或者at weekends。
2. help with homework
help表示“帮助”时，常用的句型为：help sb. with sth. 帮助某人某事；help sb. (to) do sth. 帮助某人做某事。
sometimes
sometimes是频度副词，意为“有时”，相当于at times。
辨析sometimes, some times, sometime与some time
sometimes 有时
some times 几次、几倍
sometime 某时
some time 一段时间
hardly ever
hardly作副词，表示“几乎不”；hard用作副词表示“努力地、猛烈地”，作形容词表示“硬的、困难的”。
how often
意为“多久一次”用来提问频率，常用表示频率的副词或者短语来回答，如twice a week, sometimes, every day, always等。
【拓展】辨析how long, how soon和how often
how long “多长时间”，提问for和since引出的时间状语
how soon “多久”提问“in+一段时间”
how often “多久一次”，提问动作发生的频率
how far “多远”，提问距离的远近
Internet
作名词，表示“互联网、因特网”，常用的短语为：on the Internet“在互联网上”；surf the Internet“上网”。
Free
作形容词表示“空闲的、有空的”，be free相当于have time。
free作形容词，还可以表示“免费的、自由的”，be free to do sth.“自由地做某事”。
How about
相当于what about意为“怎么样”，用来征求对方意见或者询问情况，后接名词或者动名词。
have to
表示“不得不、必须”，强调客观需求；must侧重主观上自己认为有必要做某事。
Maybe
作副词，表示“可能、也许”，常常放在句首，可以与may be相互转换。
stay up
意为“熬夜”，表示“为……熬夜”时，用“stay up for sth.”。
at least
表示“至少”，反义词为at most“最多”。
be good for
意为“对……有益”，反义词是be bad for“对……有害”。
health
是不可数名词，意为“健康”，in good health表示“很健康”，形容词为healthy，副词是healthily。
ask sb. about sth.意为“询问某人某事”。
here和there
置于句首，谓语动词是be动词或者come, go等不及物动词时，主语为名词时，用倒装结构，即主谓调换位置，若主语是代词时，主谓不倒装。
Percent
表示“百分之……”，常用“基数词+percent+of+名词”，“percent of+名词”作主语时，谓语动词的单复数取决于名词的单复数。
not...at all
意为“一点儿也不、根本不”；not at all表示“没关系、不用谢”。
Online
用作副词，表示“在线、联网”，也可以用作形容词，意为“在线的、联网的”。
20. How come
意为“为什么呢、怎么回事”，用于询问某事为什么会发生，可以单独使用也可以后接陈述句。
21.Answer
后常跟介词to，表示“……的答案”。
Although
用作连词，表示“虽然、即使”，相当于though，用来引导让步状语从句。在英语中，although/though和but不能同时出现。
23. by可以用来表示方式，意为“通过”，后接名词或者动名词短语。
24. way表示“方法”时，后常接动词不定式或者of doing作定语。
25. such as
一般用于列举同一类人或物中的一个例子，但必须数量少于前面所提及的总数，只能放在所列举的名词前；
for example一般用于列举一个例子，后面经常加上一个句子，位置很灵活，可位于句首、句中，于被列举的事例之间用逗号隔开。
sb. spend+时间/金钱+on sth. “在某事上花费多长时间或者多少钱”；
sb. spend+时间+(in) doing sth.“花费多长时间做某事”
【拓展】辨析spend, pay, take和cost
spend 主语是人 spend...on sth./spend...(in) doing sth.
pay 主语是人 pay for sth./pay +金钱. for sth.
take 主语是it It takes sb.+时间+to do sth.
cost 主语是物 sth. costs sb.+金钱
16-year-old意为“16岁的”
其中的名词用单数形式，在句中作定语，16 years old表示“16岁”，在句中作表语。
28. however作副词，表示“但是、然而”，常位于句首，后面常常跟有逗号隔开。
29.also, too, as well与either都可以表示“也”，但是用法不同。
also 放在句中行为动词前，be动词、助动词和情态动词之后。
too 用于肯定句中，放在句尾，前面用逗号隔开。
as well 用于肯定句中，放在句尾，前面不用逗号隔开。
either 用于否定句句末。
30.be afraid of意为“害怕、不敢”，后接名词、代词或者动名词。
be afraid to do sth. 意为“胆小不敢做某事”。
be afraid that...意为“担心、害怕”。
I’m afraid表示“恐怕”。
None
none表示“没有一个（人或物）”，是all“所有的人或物”的反义词，后常接介词of；另外，none强调某一类人或物数量的多少，常用来回答how many/much的提问；nobody(no one)/nothing强调个体，常用来回答what或者who的提问。
课后练习
单选
1．—I usually get up at six o'clock in the morning. What about you
—I ________ get up so early. I usually get up at 7: 00.
A．sometimes B．often C．always D．never
2．---________times have you visited Gansu Science Museum
---Only once.
A．How oftenB．How many
C．how longD．How soon
3．I don’t think fast food is good for our health, so I ______ go to MacDonald.
A．seldom B．always C．usually D．often
4．—How often do you chat with your friends online
—________. I'm busy with my study.
Only once a month B．For a month
C．Almost every day D．Maybe in two weeks
5．---_______do you brush your teeth
---Twice or more a day.
A．How soon B．How far C．How long D．How often
6．He ______ late to watch a football match last night.
A．got up B．stayed up C．put up D．cut up
7．He usually ______ with his friends after school.
A．plays the tennis B．play tennis C．plays tennis D．play the tennis
8．—______ do you go home a month
—Once.
A．How often B．How many times C．How long D．How far
9．—When do you go shopping
—I usually go shopping ______ Sunday mornings.
A．on B．in C．at D．for
10．The answer __________ the question is very interesting.
A．of B．for C．to D．with
11.They ________ eat too much salt, so they are healthy. A．always B．usually C．often D．hardly ever
12.-You look so tired, Sue. -I__________ slept last night. I feel terrible now. A．almost B．hardly C．usually D．always
13.—Does your sister watch scary movies —She ________ watches them. In fact, she is afraid of them. A．always B．never C．usually D．often
14.I ________ go to the theater, because I don’t like operas at all. A．always B．sometimes C．never
15.─__________ hours do you sleep every day？ ─Nine hours. A．How many B．How much C．How often D．How long
二、完型填空
In many countries, some families are too far from schools for kids to go to. So online schools are1for them. Students can have school wherever2whenever they want. Also, many online schools can let students work at3own pace.
4good thing about online schools is that they can give different classes. There are English, math, science, and history classes, while some other online schools also give classes5space science, French, and zoology.
Online schools also have different6ways for kids to make use of. For example, many online schools have their websites, and on these websites students can watch videos, listen to given lessons, or chat with7like teachers or other students freely. Some online schools have live（实时的）classes. In these classes, students can call and talk with the teacher. It8that they are talking face to face,9they will feel the teacher the same friendly as in real school. Other online schools even have online clubs for kids to talk about their hobbies（爱好）.
Computer technology（技术）is amazing. Since 2006, thousands of online schools have come out in the US. Online schools are there with you, but it’s10to you to decide if this kind of learning is right for you.
1．A．only B．necessary C．impossible D．perfect
2．A．but B．and C．or D．so
3．A．their B．they C．them D．theirs
4．A．Other B．Others C．Another D．The other
5．A．such as B．for example C．however D．as for
6．A．study B．learned C．learning D．studied
7．A．some B．someone C．something D．some one
8．A．sounds B．seems C．look like D．feels
9．A．because B．though C．if D．unless
10．A．own B．left C．down D．Up
三、阅读理解
We know good health and happiness are important in our life.Here are some ways to make themeasy to get.
Eat a balanced diet(吃平衡的饮食). Eat a lot of fruit and vegetables,some grains(谷物) and alittle meat.
Exercise two or three times a week.
Get enough sleep.It is best to get at least eight hours’sleep a day.
Keep yourself busy.This is good because it stops you from having bad habits.To keep yourself busy,you can walk around the house,spend time with your pet,do sports,or have a hobby.
Go out and make friends.Spend time and have fun with them.Talk with them,but try not totalk about anything bad.You should stay with the people who are healthy.
How often should we exercise if we want to get health and happiness
A. Every day. B.Once a week.
C.Two or three times a week. D.Five times a week.
We usually need at least____________hours’sleepa day.
A.five B.six C.seven D. eight
3. The underlined word“it”refers to(指代) ____.
A.eating a balanced diet B.exercising more
C.keeping yourself busy D.making friends
4.Which of the following is NOT true
A.We can eat a lot of meat to keep healthy.
B.We need to take exercise.
C.It’s good to make some friends.
D.We can spend our free time doing sports.
5.What’s the best title of the passage
A.Eating Habits B.Doing Sports
C.Making Friends D.Ways to Get Good Health and Happiness
四、完成句子
1.咱们出发吧，不要等到来不及了。(before)
Let's start _________________________________________.
2.我一点也不喜欢这双鞋。(a)
I_______________________________this pair of shoes __________________.
3.我的体育老师每天锻炼三个多小时。(more)
My PE teacher exercises ______________________________a day.
4.今天别熬夜到太晚了，否则明天上课你会觉得困的。(stay)
Don't ______________________________tonight, or you will feel sleepy in class tomorrow.
5.通过看英语电影来学英语是-个很好的方法。(by)
It is a good way to learn English ________________________________________.