人教版英语八年级上册unit2知识点（人教版八年级上册英语Unit）

Unit 2 How often do you exercise?

1. 短语归纳

①　help with housework 帮助做家务活

②　go shopping 购物

③　on weekends 在周末

④　how often 多久一次

⑤　hardly ever几乎不

⑥　once a week 每周一次

⑦　twice a month每月二次

⑧　go to the movies去看电影

⑨　every day 每天

⑩　use the Internet上网/用网

11　be free有空

12　have dance and piano lessons 上舞蹈钢琴课

13　swing dance摇摆舞

14　play tennis 打网球

15　stay up late 熬夜

16　at least至少

17　go to bed early 早睡

18　play sports 锻炼身体

19　be good for 对…有好处

20　go camping去野营

21　in one’s free time 在某人的空闲时间

22　not….at all 根本不

23　the most popular 最流行

24　such as例如

25　go to the dentist去看牙医

26　more than 超过/多于

27　Old habits die hard.旧习惯难改

28　hard=difficult 困难的 ，

29　less than 少于/不到

2. 典句必背

①　—What do you usually do on weekends? 你周末通常做什么？

—I always exercise. 总是锻炼身体。

②　—What do they do on weekends? 他们周末干什么？

—They often help with housework. 他们经常帮助干家务活。

③　—What does she do on weekends? 她周末干什么？

—She sometimes goes shopping. 她有时购物。

④　—How often do you go to the movies? 你多久看电影一次？

⑤　—I go to the movies maybe once a month. 可能一个月看一次。

⑥　—How often does he watch TV? 他多久看电视一次？

—He hardly ever watches TV. 他几乎不看电视。

⑦　—Do you go shopping? 你购物吗？

—No, I never go shopping. 不，我从来就不购物。

3. 用法集萃

(1) How often do you watch TV? 你多久看一次

· how often意为"多长时间一次 ，每隔多久"，是对句中的often, usually，every day, sometimes, never,

once a week等表示频率的词或短语提问，多用于一般现在时。

例：—How often do you go to see a film? 你多久看一次电影? —Once a week. 一周一次。

· 辨析：how often, how soon, how far与how long

How often“多长时间一次或每隔多久”，是就做某事的频率提问

一How often do you visit your mother?你多长时间看你妈妈一次?

—Once a week. 一周一次。

How soon多久之后，侧重某人某事多久能完成

—How soon will he be back? 他要多久回来?

—In an hour. 一小时以后

How far“多远”，就路程提问

—How far is it from here to the zoo? 从这里到动物园有多远?

—It’s 6 kilometres. 6千米。

How times“时间多久或物体多长”，表示时间， 侧重指“一段时间”

How long did he stay here? 他在这儿待了多久?

一About two weeks. 大约两个星期。

· 辨析sometimes, some times, sometime, some time

sometimes表示“有时”，提问用how often, 指频率

He sometimes walks to school.

他有时走路去学校

some times表示“几次，几倍”，提问用how many times

I have been to Japan some times.

我已经去过北京几次了

sometime表示“某个时候”，提问用when

I will go to Beijing some time next week.

我将在下周某个时候去北京

some time表示“一段时间”，提问用how long

I stayed in Beijing for some time.

我在北京待了一段时间

(2) Oh, I have to play tennis with my friends. 哦，我必须和我的朋友们一起打网球。

· have to意为"必须，不得不"，强调受客观条件的影响而"不得不去做某事"。它有人称、数和时态的变化，在变为疑问句或否定句时要借助助动词do, does或did。

例：Does she have to go home now? 现在她必须回家吗?

We had t walk to shoo yesterday. 昨天我们不得不步行去了学校。

（have to强调客观需要，must表示主观愿望和看法。）

(3) They often help with housework. 他们经常帮忙做家务。

· help with意为"在某方面帮助"，是固定短语，也可写作help sb. with sth. 表示"在某方面帮助某人"

· 拓展：help相关短语

help sb. (to) do sth.

帮助某人做某事

help oneself to sth.

自用(食物等)

help sb. out

帮助某人克服困难

help sb. into/out of

搀扶某人进人/走出

can’t help doing sth.

禁不住做某事

with the help of

在....的帮助下

(4) But my mother wants me to drink it. 但是我妈妈想要我喝它(牛奶)。

· want sb. to do sth. 属于"动词 宾语 宾补"的固定结构。

例：She wanted me to read it again. 她想要我再读一遍。

(5) She says it's good for my health. 她说那对我的健康有好处。

· 句中的it's good for my health作says的宾语；it 指上文所说的"喝牛奶"

· 拓展：与good相关短语

be good for 对...有好处

Eating fruit is good for our health. 吃水果对我们的健康有好处

be good to 对...友好

He is good to me. 他对我很友好

be good with 善于应付...的；对...有办法

He is good with difficulty. 他善于应付困难

be good at 对...擅长

You’re good at telling stories. 你很擅长讲故事

(6) Although many students like to watch sports, game shows are the most popular.

虽然许多学生喜欢看体育节目,但游戏类节目是最受欢迎的。

· Although作连词，意为"虽然，尽管"，用于引导让步状语从句，语气比较强，可放于句首或句中，有时可与though 互换。

例：Although he was tired, he went on working. 尽管他很累，他仍然继续工作。

He often helps me with my English although/though he is quite busy.

尽管他相当忙，但他常常帮我学英语。

· although/ though引导的让步状语从句不能与but连用，但可以与yet, still连用。

(7) It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.

通过上网或观看游戏类节目放松是有好处的，但我们认为，放松的最好方法是通过锻炼。

句型"It is/was adj (for sb.) to do sth."中，it是形式主语，真正的主语是动词不定式短语to do sth.。

该句型的意思是："（对某人来说）做某事.....的"

It’s adj. for sb. to do sth.

该句式常用于表示事物的特征、特点。

形容词常为表示客观情况的形容词，如：

easy, hard, difficult, interesting, impossible等

It’s very hard for him to learn two languages.

对他来说学两种语言是很难的。

It's adj. of sb. to do sth.

该句式常用于表示人物的性格、品德。

形容词常为表示主观感情或态度的形容词，如：

good, kind, nice, clever, foolish等

It’s very nice of you to help me.

你来帮助我，你真是太好了。

4. 语法聚焦

· 频度副词：表示动作频率的副词

辨析：always, usually, often, sometimes, seldom, never

always一直；总是

The sun always rises in the east and sets in the west.

太阳总是东升西落

usually通常

I usually ask my father for help. 我通常会向我爸爸求助

often经常

It often rains here in April. 这儿四月份常下雨

sometimes有时；不时

I sometimes wait for him at the school gate.

我有时在学校大门口等他

seldom/hardly/hardly/ever很少；几乎不

I don’t like swimming, so I seldom go swimming.

我不喜欢游泳，所以我很少去游泳

never从不；从来没有

I never tell lies. 我从不说谎

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