八年级英语上册Unit2知识重点总结

1、Unit2 How often do you exercise? Section A 知识提纲一、词形变化l.one基数词，一 一序数词 first第一 一 adv. once一次2.two 基数词，二 一序数词 second第二一 adv. twice两次3.little adj.很少 一比较级less较少一 最高级least最少二、短语1.hardly ever 几乎从不 2.swing dance 摇摆舞 3.at least 至少4.help with housework 帮助做家务5.how often 多久一次6.on weekends=on the weekend 周末7.onc

2、e a week5周一次 twice a month 每月两次 8.be free 有空9.go to the movies 去看电影10.use the Interne用互联网on the Internet 在网上 surf the Internet 上网11.swing dance摇摆舞12.stay up late熬夜；睡得很晚13 .play tennis 打网球play+球类/棋类/中国乐器 play the +西洋乐器14 .at least®少 at most最多 15.go to bed early早点睡觉16 .have/take dance and piano l

3、essons:舞蹈课和钢琴课17 . play sports=do sports® 行体育活动三、词法1 .go shopping去购物 go + V-ing表示进行某项活动 Go swimming / shopping / skating /fishing /hiking 等2 .表示频率的词或词组： 频率副词：always=all the time 一直，总是，usually通常 often 经常 sometimes =at times 有时 hardly ever几乎从不 never从不 次数十时间段：once / twice a week每周一次/两次 three or fo

4、ur times a month 每月三、四次表示 J次或两次”用once或twice , 三次或以上用 基数词+ times柒示。 every + 时间段： every day , every week 等。就以上频率副词提问时用how often （每隔）多久I watch TV twice a week .（就划线部分提问）How often do you watch TV ?你多久看一次电视？3 .full adj. 饱的 一opp. hungry饿的，饥饿的满的一 opp. empty空的（be ） full of充满的The bottle is full of water .瓶子里

5、装满了 水。4 .maybe adv.也许，常用语句首，表示可能性较小。may be也许是，情态动词 may +系动词be构成，用于句中。Maybe he is a student = He may be a studen他也许是个学生。5 . little adj.很少，几乎没有，后接不可数名词，表否定含义。a little有点儿，后接不可数名词，表肯定含义。few adj.很少，几乎没有，后接可数名词复数，表否定含义。a few有点儿，后接可数名词复数，表肯定含义。little opp. much 比较级 less 最高级 least , at least 至少 few opp many

6、比较级 fewer 最高级 fewest6 .由how构成的疑问词组的用法： 多少一 how many + 可数名词复数 how many apples h how much + 不可数名词 how much coffee但how much = what ' s the price of 还用来询问价钱 多少钱 " How much are those pants ?how many times多少次，询问次数，答语为次数。He goes to Shanghai twice a year 他每年去两次上海。一 How often does he go to Shanghai

7、?（就频率提问） He goes to Shanghai twice a year .fHow many times does he go to Shanghai 就次数提问） how old 多大，询问年龄。I ' nive years old .撕划线部分提问）-How 01d are you ?| How 10ngi 多久（就一段时间提问） 多长（就某物体的长度提问）I stay here for two weeks .就划线部分提问） f How 10ng do you stay here ?你在这呆多久了 ？The river is 10 kilometers 10ng .酰

8、划线部分提问） 一 How long is the river ?这条河多长？how soon多久以后,就“in +一段时间”提问。He will come back in two hours .（就划线音B分提问） 他两小时后回来。fHow soon will he come back7 .How come死么回事?一、词形变化1 .health n.健康一adj. healthy 健康的 一adv. healthily 健康地 healthy fopp. unhealthy , healthily fopp. unhealthily2 .die v.死亡，消失 一adj. dead 死的

9、一n. death 死亡一现在分词 dying3 . write v.写一n. writer 作者，作家二、短语1. be good for对一有好处 be good with与相处融洽be good at=do well in 擅长 be good to sb. sth 对好be good to do sth .适合，宜于 The water is good to drink.2. not at afr点儿也不 at all 根本 first of all 首先3. go camping去里子营 4.such as比如;诸如5.in one ' s free;tme人的业余时间 6.

10、more than多于； 超过7.go to the dentist去看牙医8. less than少于9.old habits die hard 积习难改10.the most popular 最受欢迎的11 .the answers to the question4 可题的答案12 .go online = use the Internet =surf the Internet!:网13 .go to the dentist 去看牙医14 . keep healthy=stay healthy =keep in good health®：持健康三、词法1. ask sb. to

11、do sth.叫某人做某事- ask sb. not to do sth叫某人不要做某事ask sb. about sth.问某人某事ask sb. for sth.向某人要求 Teachers asked us to clean the classroom .We asked our students about their free time activities .2. surprise n.惊讶，惊奇 to one ' s surprise人惊讶的是in surprise惊奇地，惊讶地v.使惊奇、意外 be surprised at sth.对感到意外t be surprise

12、d to do sth.惊讶做某事be surprised that + 陈述旬I was surprised at the news = I was surprised to hear the news .听到这个消息我感到很惊讶。3. fifteen percent of the students .百分之十五的学生。当分数作主语时，谓语动词要与 of后的名词保持一致。Fifteen percent of the students come from the countryside .百分之十五的学生来自乡下。4. although conj.尽管，虽然，表示转折关系。同义词 though 在英语中although / though不能与but同时使用。Although they ' re neighbors , they don ' t play together .=They' re neighborsput they don ' t play together .尽管他们是邻居，但是他们不在一起玩。5. spend - 度过 （时间）spend the weekend with family .v和家人一起度周末。、花费（时间、金钱）spend +寸间件钱+ on