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人教版八上Unit2知识点讲解与练习

Unit2 How often d o you exercise?一. help with housework 帮助做家务1. help with sth. 意为“帮助做某事”2. help sb. with sth. = help sb. _______ sth. 帮助某人做某事Eg: I often help him ______ his English. = I often help him __________ English. 我经常帮他学习英语。

【拓展】1. help oneself to… 请随便吃/喝···Please help yourself to some cakes.2.can’t help doing sth 情不自禁做某事I can’t help falling in love with that girl. 我情不自禁爱上那个女孩。

二.housework 意为“家务劳动”。

不可数名词。

1. They have housework to do. A. many B. much三. sometimes 有时辨析:sometimes ,some times ,sometime , some timesometimes 有时候。

=at times= from time to time也是“有时”的意思。

some times 几次。

time作可数名词时可作“次数”解;表示“时间”时是不可数名词。

sometime 某个时候。

可指过去或将来的某个时候。

some time 一段时间。

常与for连用。

对它提问用how long 。

口诀记忆:分开“一段时间” ;相聚“某个时候”。

练习:① We plan to stay in Hainan for . 我们打算在海南呆一段时间。

② I am sure that we have met before. 我肯定我们之前见过几次了。

③ I have letters from him. 有时我会收到他的来信。

四. hardly ever 几乎不①hard作形容词时,意为“困难的;硬的;勤奋的;严厉的;苛刻的”。

hard作副词时常用来表示程度,意为“努力地;猛烈地;剧烈地”This ground is too hard to dig. 这块地太硬,挖不动。

They tried hard to succeed. 他们努力工作,以求得成功。

②hardly 副词,意为“几乎不”率。

常用来修饰表示能力的词,如can, could等。

He can hardly play football. 他几乎不会打篮球。

There is hardly any coffee left. 几乎没有剩余的咖啡了③hardly ever是表频率的副词,意为“几乎不;几乎没有”,相当于almost not, seldom。

练习:There is ______ ______food left. 几乎没有食物剩下。

He ______ ______ . 他几乎不工作。

He ______ ______. 他工作努力。

五.What’s your favorite...? =What... do you like best?你最喜欢的......是什么?1.What’s your favorite animal?你最喜欢的动物是什么?= __________________________________________六. free 意为“空闲的,有空的”反义词busy. be free 意为“闲着,有空”eg::He is free now.他现在有空。

拓展:free还可译为“免费的”Eg:The tickets are free. 票是免费的。

七. quite full 很忙,相当忙.1. adj. full 还可译为“满的,充满的”。

反义词是empty,意为“空的”。

Eg:The bus was full when they got there. 翻译________________________________________.拓展:A be full of B. = A be fill with B; A中充满了B。

The room is full of students. The bus is full of people.The hall is _______ people. A. fill with B. full with C. filled of D. filled with2.full adj. “饱的”。

其反义词是hungry,意为“饥饿的”。

Are you hungry or full?你饿了还是饱了?Eg:I can’t eat any more,I am quite full. 我不能再吃了,我相当饱了。

八. maybe “也许,大概,可能”,常位于句首。

Eg:Maybe he knows Tom. 也许他认识Tom。

辨析:maybe 和may beLily an English teacher. Lily可能是一名英语老师。

=________________________________________九.at least 意为“至少”。

其反义词为at most “最多”。

Eg:There are at least 1,500 students in our school. _____________________________________。

十. how often意为“多久一次”,常用于对时间频率的提问。

回答可用once/twice/three times a day(一天一/两/三次),sometimes(有时),never(从不),very often(经常)等。

How often do you watch TV? 你多久看一次电视?【拓展】十一.look、see、watch和read辨析:look为不及物动词,后接宾语时须用介词at,指看的动作。

see着重于看的后果,即“看到,看见”。

read多指“看书、报”,这里的“看”实为“读”。

watch表示“注视,观看,监视”之意。

也常用于“看电视,看比赛”等短语中。

一. want sb. to do sth. 的否定形式为want sb. _____to do sth.Eg:She wants me to bring him some pens. 否定:She wants me__________________ him some pens.拓展:1.want sth. 想要某物 2.want to do sth. 想要做某事3. want (sb.)to do sth.=would like/love (sb.)to do sth.二. be good for 意为“对……有益”。

反义词为be bad for “对……有害”。

Eg: Vegetables are good for you. 蔬菜对你有好处。

【拓展】1.be good to“对…好”,其反义短语为be bad to“对…不好”。

2. be good at“在…方面擅长”, at后面常接名词、代词或动词-ing形式,同义短语为do well in。

She is good at English and Chinese. = She does well in English and Chinese. 她擅长英语和汉语。

I am good at __________________(play)basketball.3. be good with “和…相处得好;擅于和…相处”。

Are you good with children? 你和孩子们相处得好吗?Eg:I asked my teacher about today’s homework.三. Here are the results. 这是(调查)结果。

here 位于句首,句子要倒装。

Here is + 单数名词。

Here are + 复数名词.Eg:Here is your jacket. 这是你的夹克。

四. 1. 百分数由percent来表示,构成:基数词+percent ,常用“数词+percent of+名词”这一结构作主语时,谓语的单复数要看percent of 后跟的名词,如果是可数名词复数,谓语应该用复数,如果是不可数名词,谓语应该用单数Thirty percent of the students ______ ( like) watching game shows.70 percent of water _______ ( be ) salty water(盐水)。

五.surprised 惊奇的,感到意外的1. be surprised at sb. / sth. / doing sth.对…感到惊奇, We are surprised at the news.2. be surprised to do sth.对做某事感到惊讶。

I’m very surprised to meet you here.3. be surprised that + 从句.因…而感到惊讶。

I’m surprised that he came here on time.【拓展】 surprising 令人惊讶的to one’s surprise 令某人惊讶的是in surprise 惊讶地;吃惊地六.the answers to questions问题的答案the way to sp 去某地的路七 . most students = most of the students 大多数学生1. most +复数名词. Most birds can fly.大多数鸟儿会飞. __________ 大部分时间2. most of + 限定词+复数名词 most of the girls , most of my friends3. most of + 人称代词宾格 most of them / us______ the students like reading the story. A. Most B. Most of4. the +most +多音节形容词,表示最高级,意为“最”。

This is the most beautiful flower. 这是最漂亮的花。

如果most前有不定冠词a,则表示“非常;很”,相当于very。

She is a most beautiful girl. 她是个非常漂亮的姑娘。

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