8年级英语上册知识点总结
接下来本站小编为你整理了8年级英语上册知识点总结，一起来看看吧。
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 去滑板
6. keep healthy=stay healthy 保持健康
7. exercise=take(much)exercise=do sports锻炼
8. eating habits 饮食习惯
9. take more exercise 做更多的运动
10. the same as 与什么相同
11. be different from 不同
12. once a month一月一次
13. twice a week一周两次
14. make a difference to 对什么有影响
15. how often 多久一次
16. although = though虽然
17. most of the students=moststudents
18. shop=go shopping=do some shopping 购物
19. as for至于
20. activity survey活动调查
21. do homework做家庭作业
22. do housework做家务事
23. eat less meat吃更少的肉
24. junk food垃圾食物
25. be good for 对什么有益
26. be bad for对什么有害
27. want to do sth 想做某事
28. want sb to do sth想某人做某事
29. try to do sth 尽量做某事
30. come home from school放学回家
31. of course = certainly = sure当然
32. get good grades取得好成绩
33. someadvice
34. hardly=not nearly / almost not几乎不
35. keep/be in good health保持健康
stressed out紧张的，有压力的
37. take a vacation 去度假
back 回来
8年级英语上册知识点语法总结一. 形容词/副词的比较级和最高级
1. 形容词/副词的比较级和最高级的构成规则
(1)单音节词和少数以-er，-ow结尾的双音节单词，比较级在后面加-er，最高级在后面加-est。
① 单音节单词
small→smaller→smallest
short→shorter→shortest
tall→taller→tallest
great→greater→greatest
② 少数以-er，-ow结尾的双音节单词
clever→cleverer→cleverest
narrow→narrower→narrowest
(2)以不发音e结尾的单音节单词，比较级在原形后加-r，最高级在原级后加-st。
large→larger→largest
nice→nicer→nicest
able→abler→ablest
(3)以一个辅音字母结尾的闭音节(即：辅音+元音+辅音)单词中，先双写末尾的辅音字母，比较级加-er，最高级加-est。
big→bigger→biggest
hot→hotter→hottest
fat→fatter→fattest
(4)以“辅音字母+y”结尾的双音节词， 把y改为i，比较级加-er，最高级加-est。
easy→easier→easiest
heavy→heavier→heaviest
busy→busier→busiest
happy→happier→happiest
(5)其他双音节词和多音节词，比较级在前面加more，最高级在前面加most。
beautiful→more beautiful→most beautiful
different→more different→most different
easily→more easily→most easily
(6)有少数形容词、副词的比较级和最高级是不规则的，必须熟记。
good→better→best
well→better→best
bad→worse→worst
ill→worse→worst
old→older/elder→oldest/eldest
many/much→more→most
little→less→least
far →further/farther→ furthest/farthest
2. 形容词和副词比较级的用法
(1)“甲+be+(倍数)+形容词比较级+than+乙”表示“甲比乙…”或“甲比乙…几倍”。
Tom is taller than Kate.
汤姆比凯特高。
This room is three times bigger than that one.
这个房间比那个大三倍。
(2)“甲+实意动词+(倍数)+副词比较级+than+乙”表示“甲比乙…”或“甲比乙…几倍”。
I got up earlier than my mother this morning.
我今天早晨起床比我妈妈还早。
He runs three times faster than his brother.
他跑的速度比他弟弟快三倍。
3. 形容词和副词最高级的用法
(1)“主语+be+the+形容词最高级(+单数名词)+in/of...”表示“……是……中最……的”。
Tom is the tallest in his class./of all the students.
汤姆是他们班上/所有学生当中最高的。
This apple is the biggest of the five.
这个苹果是五个当中最大的。
(2)“主语+实意动词+(the)+副词最高级+in/of...”表示“……是……中最……的”。
I jump (the) farthest in my class.
我是我们班跳得最远的。
二. 句子成分
1.主语：句子所陈述的对象。
2.谓语：主语发出的动作。一般是有动作意义的动词。
3. 宾语：分为动词宾语和介词宾语，属于动作的承受者。
4. 系动词：表示状态或状态变化的动词，没有实际的动作意义。如 be, 感官系动词(look, sound, smell, taste 和 feel)、保持类系动词(keep, stay 和 remain)、状态变化类系动词(become、get、turn 和 go)等。
5. 表语：紧跟系动词后面的成分。
6. 定语：修饰名词或代词的成分。
7. 状语： 修饰形容词、副词、动词或句子的成分。
8. 补语：分为宾语补足语和主语补足语。是对宾语和主语的补充说明，与其有主动或被动的逻辑关系。
例如：You should keep the room clean and tidy.
你应该让屋子保持干净整洁。
(You是主语， should keep是谓语，the room是宾语，clean and tidy是宾语补足语。)
This kind of food tastes delicious.
这种食物吃起来很可口。
(This kind of food是主语， tastes是系动词， delicious是表语。)
注意：主语、谓语、宾语、系动词、表语、补语是一个句子的主干成分;定语和状语是一个句子的修饰性成分，不是主干成分。
8年级英语上册知识点句子总结1. How oftendo you exercise? 你(你们)多久锻炼一次身体?
How often + 助动词do(does或did)+ 主语 + do sth.? 疑问词howoften是问频率(多久一次),(在这里助动词do(does或did) 是起帮助构成疑问的作用)与一般现在时或一般过去时连用，回答一般是用表示频率的副词，如：once,twice, three times…, sometimes, often, quite, often, never, every day, once aweek , twice a month , three times a month , three or four times a month 等。
翻译：“你们多久到工厂去一次?”“每星期两次。”
“How often do you go to the factory?” “Twice a week. ”
“他们多长时间举办一次舞会?”“通常每两周举办一次。”
“How often do they have a dancing party?” “Usually, onceevery other week.”
“他多久去购一次物?”“一个月一次。”
“How often does he go shopping?” “He goes shopping once amonth.”
2. “What do you usuallydo on weekends?” “ I usually play soccer.”
“周末你通常做什么?”“我通常踢足球。”
第一个do为助动词, 在这起帮助构成疑问的作用;而第二个do则是实义动词。
翻译：
What do you usually do on weekends? I often go tothe movies.
What does she usually do on weekends? She sometimesgo hiking.
3. “What’s your favoriteprogram?” “It’s Animal World.”
=What program do youlike best?
“你最喜欢什么节目?”“动物世界。”
4. As for homework ,most students do homework every day .
as for...意思是“至于;关于”，常用于句首作状语，其后跟名词、代词或动词的-ing形式(即动名词)。如： Asfor 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。
翻译：至于我自己，我现在不想去。 (Asfor myself, I don’t want to go now. )
至于那个人，我什么都不知道。(Asfor the man, I know nothing about him.)
5. Mom wants me to getup at 6:00 and play ping-pong with her .
want to do sth. 意思是“想要做某事”;
want sb. to do sth.意思是“想要某人做某事”。如：
Do you want to go to themovies with me?你想和我一起去看电影吗?
The teacher doesn't wantus to eat hamburgers.老师不想让我们吃汉堡包。
6. She says it’s good formy health.
be good for...表示“对……有益(有好处)”;其反义为：bebad for...。(这里for 是介词，后跟名词、代词或动名词)
如：It's good for us to domore reading. 多读书对我们有好处。
Reading in bed is badfor your eyes.在床上读书对你的眼睛有害。
7. How many hours do yousleep every night?
8. I exercise every day, usually when I come home from school .
9. My eating habits arepretty good . 这里pretty相当于very 。
10. I try to eat a lotof vegetables , usually ten to eleven times a week .
try to do sth.表示“ 尽力做某事 ” ，不包含是否成功的意思而trydoing sth.表示“(用某一办法)试着去做某事”。
如: You’d better trydoing the experiment in another way.
你最好试试用另一种方法做这个试验。
11. My healthy lifestylehelps me get good grades.
help sb.(to) do sth.帮助某人做某事
12. Good food andexercise help me to study better.
这里better是well的比较级，而不是good的比较级
13. Is her lifestyle thesame as yours or different?
=Is her lifestyle thesame as your lifestyle or is her lifestyle different from yours? be the same as… / be different from …
14. What sports do youplay ?
15. A lot of vegetableshelp you to keep in good health .
keep in good health =keep healthy = stay healthy
16. You must try to eatless meat .
try to do sth.表示“ 尽力做某事 ”,不包含是否成功的意思,less是little的比较级
17. That soundsinteresting.
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