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八年级上册英语所有必考点总结

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  Unit1 Where did you go on vacation?

  【重点语法】

  不定代词:不指名代替任何特定名词或形容词的代词叫做不定代词。

  用法注意:

  1. some 和any +可数名/不可数名。

  some 多用于肯定句,any多用于否定句、疑问句和条件从句 。有些问句中用some,不用any, 问话者希望得到对方肯定回答。

  2. 由some, any, no, every 与 body, one, thing构成的复合不定代词作主语时,其谓语动词用三单。

  3. 不定代词若有定语修饰,该定语要置于其后:如:something interesting

  【重点短语】

  1. buy sth for ab./ buy sb. sth 为某人买某物

  2. taste + adj. 尝起来……

  3. nothing...but + V.(原形) 除了……之外什么都没有

  4. seem + (to be) + adj 看起来

  5. arrive in + 大地方 / arrive at + 小地方 到达某地

  6. decide to do sth. 决定做某事

  7. try doing sth. 尝试做某事 / try to do sth. 尽力做某事

  8. enjoy doing sth. 喜欢做某事

  9. want to do sth. 想去做某事

  10. start doing sth. 开始做某事=begin doing sth.

  11. stop doing sth. 停止做某事 区分: stop to do sth. 停下来去做某事

  12. dislike doing sth. 不喜欢做某事

  14. so + adj + that + 从句 如此……以至于……

  16. tell sb. (not) to do sth. 告诉某人(不要) 做某事

  17. keep doing sth. 继续做某事

  18. forget to do sth. 忘记去做某事 / forget doing sth 忘记做过某事

  【词语辨析】

  1. take a photo/ take photos 拍照

  quite a few+名词复数 “许多…”

  2. seem + 形容词 看起来…... You seem happy today.

  seem + to do sth. 似乎/好像做某事 I seem to have a cold

  It seems + 从句 似乎..…. It seems that no one believe you.

  seem like ... 好像,似乎….. It seems like a good idea.

  3. arrive in +大地点= get to= reach+地点名 “到达......”

  arrive at +小地点

  (注:若后跟地点副词here/there/home, 介词需省略,如: arrive here; get home)

  4. feel like sth 感觉像…

  feel doing sth. 想要做某事

  5. wonder(想知道)+疑问词(who, what, why)引导的从句。

  6. because of +名/代/V-ing

  because+从句

  He can’t take a walk because of the rain.

  I don’t buy the shirt because it was too expensive.

  7. enough +名词 足够的…...

  形容词/副词+enough

  Unit2 How often do you exercise?

  【重点语法】

  1. 频率副词: always, usually, often, sometimes, never

  频率副词在句中通常放在实义动词之前, be动词或助动词之后。常用于一般现在时态中。

  2.“次数”的表达方法

  一次 once, 两次twice,三次或三次以上:基数词+ times, 如:three times, five times,

  3. how often“多久一次”问频率,回答常含有频率词组或短语。

  常见的how疑问词:

  1)How soon 多久(以后)

  —How soon will he be back?他多久能回来?

  —He will be back in a month. 他一个月后能回来。

  2)how long “多久”

  —How long did it take you to clean the house? 你打扫房子用了多久?

  —It took me half an hour to clean the house. 我打扫这房子用了半小时。

  3)How many+名复

  How much+不可名

  “多少” 问数量(how much 还可问价格)

  【重点短语】

  1. go to the movies 去看电影

  2. look after = take care of 照顾

  3. surf the internet 上网

  4. healthy lifestyle 健康的生活方式

  5. go skate boarding 去划板

  6. keep healthy=stay healthy 保持健康

  7. eating habits 饮食习惯

  8. take more exercise 做更多的运动

  9. the same as 与什么相同

  10. be different from 不同

  11. once a month一月一次

  12. twice a week一周两次

  13.make a difference to 对......有影响/作用

  14. most of the students=most students

  15. shop=go shopping=do some shopping 购物

  16. be good for 对......有益

  17. be bad for 对......有害

  18. come home from school放学回家

  19. of course = certainly = sure 当然

  20. get good grades 取得好成绩

  21. keep/be in good health 保持健康

  22. take a vacation 去度假

  【词语辨析】

  1. maybe / may be

  maybe 是副词,意为“大概, 可能,或许”,一般用于句首。May be是情态动词,意为“可能是...,也许是...,大概是...”.

  The baby is crying. Maybe she is hungry.

  The woman may be a teacher.

  2. a few / few / a little / little

  People can live to 100, but few people can live to 150.

  There is little time left. I won’t catch the first bus.

  Could you give me a little milk?

  3. hard / hardly

  hard作形容词,意为“困难的,艰苦的,硬的”;作副词,意为“努力地,猛烈地”。hardly为副词,意为“几乎不”。

  The ground is too hard to dig.

  I can hardly understand them.

  It’s raining hard. The people can hardly go outside.

  4. As for homework , most students do homework every day .

  as for...意思是“至于;关于”,+名词、代词或动词的-ing形式(即动名词)。

  如: As for him,I never want to see him here.

  至于他,我永远不希望在这里见到。

  As for the story,you'd better not believe it.

  关于那故事,你最好不要相信。

  5. That sounds interesting.

  这是“主语+系动词+表语”结构的简单句。sound(听起来),look(看起来),smell(闻起来),taste(尝起来),feel(觉得),seem(好象),grow(变得),get(变得)等词在英语中可用作系动词,后跟形容词作表语。如:

  It tastes good. 这味道好。

  The music sounds very sweet. 这音乐听起来很入耳。

  The smoke grew heavier and heavier. 烟雾变得越来越浓了。

  6. percent 名词,意为“百分之……”

  百分数的表示方法:基数+ percent (不用复数形式),percent做主语时,谓语动词的数要根据其后面的名词来确定。

  50%:fifty percent 百分之五十

  Fifty percent of the apples are bad. 50%的苹果都坏了。

  Twenty percent of the meat is in the fridge. 20%的肉都在冰箱

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