人教版八年级英语上册复习课件unit 2 how often do you rcise重难点的讲解23张ppt

1、八年级上册Unit 2 How often do youexercise?教学任务1. 完成二单元教学重难点的讲解(频率副词）2. 完成二单元考试重点的讲解（共计27个）3. 完成练习册习题的讲解4. 完成一单元词汇笔记的听写学员检测完成1单元的单词、笔记检测重难点讲解4语法重难点讲解频度副词1. 含义：表示次数、频率的副词。2. 常见的频度副词按频率发生的高低依次为： alwaysusuallyoftensometimeshardly evernever。3.表示具体的频率、次数时，一次 once，两次 twice，三次以上“基数词+times”。4. 句中位置：实意动词之前，be动词、助动

2、词、情态动词之后。eg:We never eat junk food.Lucy is sometimes very busy.5. 对频度副词提问，用how often。eg:-How often do you exercise?-Hardly ever.考点讲解6考点讲解：1. What do you usually do on weekends? on weekends 在周末,泛指每个周末on the weekend 在周末，在这个周末，特指某个周末（英国英语中用at）eg:I have piano lessons on weekends. I will go shopping on t

3、he weekend.2. help with housework help with sth.帮助做某事help sb. with sth.=help sb.(to) do sth.帮助某人做某事eg:My brother often helps with housework at home. housework,不可数名词，“家务劳动，家务事”。考点讲解：3、辨析 sometimessometimesome timessome timesometimes,有时，频率副词，表示动作发生的不经常性，多与一般现在时连用，可位于句首、句中或句末。sometime,某个时候，副词，表示某个不确切或不

4、具体的时间，常用于过去时或将来时，对它提问用when。some times,名词短语，几次，几倍。time是可数名词，对它提问用how many times。some time,名词短语，一段时间。句中谓语动词长为延续性动词。 对其提问用How long。考点讲解：eg:Sometimes I get up very late.I will go to Shanghai sometime next week. I have read the story some times.Iwill stay here for some time.4.hardly ever 几乎从不本身具有意义，不能再使用

5、其他词。相当于hardly,ever起强调作用。hardly,副词，几乎不（没有），相当于almost not。almost,副词，几乎，差不多。置于实意动词前，系动词、助动词、情态动词后，不能放在句末。eg:She hardly ever eats anything.考点讲解：5、-How often do you watch TV?-Twice a week.1)how often,多久一次,用来提问频率。eg:-How often do you play sports?-Three times a week.辨析：How often,多久一次，用来提问动作发生的频率。How long,多

6、长，用来询问多长时间，也可询问某物有多长How far,多远，用来询问距离，指路程的远近。eg:How long does it take to get to Shanghai from here?How far is it from here to the park?2）twice a week 一周两次考点讲解：6、use the Internet 用互联网1） use,及物动词，“使用，运用” 事use sth. to do sth.用某物做某eg:I use a knife to cut bread.2)Internet,名词，互联网，因特网on the Internet 在因特网上7

7、、Whats your favorite program?Whats your favorite .?=What .do you like best?你最喜欢的.是什么？eg:Whats your favorite animal?=What animal do you like best?考点讲解：8、How come？怎么回事？表示某件事情很奇怪，有点想不通；可单独使用，也可引导问句相当于疑问词why。但how come开头的特殊疑问句使用的仍是陈述语序。eg:Why didnt you tell me about it?= How come you didnt tell me about

8、it?考点讲解：9、I go to the movies maybe once a month.1)go to the movies 去看电影 = go to the cinema = go to a movie 2)maybe 副词，作状语，”或许，大概，可能“。may be 情态动词+be动词，可能是。eg:Maybe you are right.You may be right.做题关键： 看句子中是否有谓语动词。10、He plays at least twice a week.at least 至少反义短语：at most最多考点讲解：11、She says its good for

9、 my health.1)be good for,对.有益”，反义词，be bad for。eg:Eating vegetables is good for your health.辨析：be good at,擅长，后接名词，代词和动名词。eg:I m good at (playing)basketball.be good with,“和.相处得好”。(你和你同班同学相处的好吗？）be good to对友好相当于 be friendly/kind to eg:Are you good with children? 2)health,不可数名词，健康。形容词，healthy,健康的。eg:The

10、 old man is very healthy.be in good/poor/bad healthbe healthy /keep healthyWe should eat more vegetables to keep healthy.考点讲解：12、Last month we asked our students about their free timeactivities.ask:ask sb about sth.ask sb. to do sth.问某人关于某事的情况要求某人做某事ask sb. not to do sth.要求某人不要做某事eg:I ask my teacher

11、 about todays homework.My mother asks me to go home on time every day.13、Here are the results.here位于句首，句子要倒装。1）完全倒装，主语为名词。eg:Here is a letter for you.2）部分倒装，主语为代词。eg:Here it is.考点讲解：14、We found that only fifteen percent of our students exercise every day.1)“find+that从句”结构，从句用陈述句语序。eg:I found that th

12、e job was very interesting. 2)percent,百分之.表达结构：基数词+percent (percent没有复数形式，作主语时，根据它所修饰的名词来判断谓语的单复数。）eg:Forty percent of the students in our class are girl.Thirty percent of time passed.15、.Twenty percent do not exercise at all!not.at all,“一点儿也不；根本不”。eg:I dont know about it at all.考点讲解：对比：not at all,不

13、客气“，相当于You are welcome.eg:-Thank you for your help.-Not at all.16、The answers to our questions about watching television were alsointeresting.the answers to the questions,这些问题的答案to,介词，“指向，对于，针对”。eg:the key to the doorCan you find out the answers to the questions?17、Although many students like to wat

14、ch sports,game shows are themost popular.1)although,连词，“虽然，尽管”。考点讲解：eg:Although my grandpa is old,he looks very strong and healthy.注：but,表示“然而，但是”，但不能与although/though出现在同一个句子中。（because,so)eg:She kept on working although she was tired.2)the most popular是popular的最高级，“最受欢迎的”。17、It is good to relax by u

15、sing the Internet or watching game shows.but we think the best way to relax is through exercise.It is +adj.(for sb.)to do sth.（对某人来说）做某事是的。eg:It is very important to listen carefully in class.考点讲解：18、Exercise such as playing sports is fun,and you can spend time with your friends and family as you pl

16、ay together.1) such as,比如；诸如。用来列举人或事物。2) spend,及物动词，“度过”，“花费（时间、金钱等）”。spend .on.在某方面花费时间或金钱spend.(in)doing sth.花费金钱或时间做某事eg:He didnt spend much time on his homework.He always spends his time playing soccer.19、old habits die hard 积习难改die,及物动词，也可作不及物动词。“死亡，消失”。dead,形容词，死亡的。death，名词，死亡。eg:He died three

17、 years ago.考点讲解：19、She usually watches TV for more than two hours a day. more than,超过；多于；不仅仅。相当于over。反义短语：less than,不到，少于。eg:He sleeps less than seven hours every night.20、She says she is afraid.afraid,形容词，“担心的，害怕的”。1) be afraid to do sth. / be afraid of doing sth.害怕做某事eg:Im afraid to travel by plane.Dont be a