语法也是英语学习中的重点，在英语学习中，理解了句子中的成分将会帮助你学会分析句子，在做题的过程中也会更加顺利。下面小编为大家带来初二英语上册语法知识点，希望对您有所帮助!
初二英语上册语法知识点
1.主语：
表示句子所说的是“什么人”或“什么事儿”，一般由名词，代词或相当于名词的词或者短语充当
例如：Gina is from Australia.
She often goes to the movies.
This kind of juice tastes good!
2.谓语：
主语发出的动作。一般是有动作意义的动词。谓语和主语在人称和数两个方面必须保持一致。
例如： We are both quiet.
He has a smart phone.
You should study harder.
Her parents are teachers.
3. 宾语：
分为动词宾语和介词宾语，属于动作的承受者。
例如：He's playing soccer.
Good food and exercise help me to study harder.
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。
This picture looks so beautiful.
Keep working, you will see the post office on your right.
5. 表语：
紧跟系动词后面的成分。说明主语是什么或者怎么样，由 n. adj. 或者相当于名词或形容词的词或者短语，和系动词一起构成谓语。
例如：Her mother is a bank clerk.
Are you ready?
We were at home last night.
6. 定语：
修饰名词或代词的成分。作定语的`出形容词外，还有代词、数词、名词、介词短语或相当于形容词的词或者短语。
例如： Peel three bananas.
What's your name, please?
She's a good basketball player.
7. 状语：
修饰形容词、副词、动词或句子的成分。一般表示行为发生的时间地点目的方式程度等意义。通常有副词、介词短语或相当于的副词的词或短语来表示。
例如：People are all working hard.
Beijing is not very cold in winter.
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。
初二英语上册必背知识点
一、重点短语：
1.on weekends
2.on weekdays
3.as for
4.my eating habits
5.have a healthy lifestyle
6.the same as
7.the result of
8.junk food
9.get good grades
10.see a dentist
11.have a healthy habit
12.be stressed out
13.a balanced diet
14.for example
15.at the moment
16.be sorry to do sth
17.go bike riding
18.take walks=go for walk
19.take a vacation
20.plan to do sth
21.western country
22.take sth with sb
23.depend on
24.host family
25.hardly ever
26.ask sb about sth
27.get back to school
28.a balance of
29.kind of
二、考点归纳：
考点1.want sb to do sth 想要某人干某事
His father wants him_____(become )an actor.
考点2.try 的用法:
1).try to do sth 尽力干某事
He tries ______(eat) lots of vegetables and fruit every day .
2).try not to do sth 尽力不干某事
We try______(not let) my teacher down.
3).try one’s best to do sth 尽某人努力干某事
We should try our best ______ (study) all subjects.
4)词组: try on 试穿 have a try 试一试
考点3.although 的用法:
although /though 引导让步状语从句，“即使，虽然”，不能与but 连用，但可与yet, still 连用。
考点4.finish doing sth 结束干某事
I will finish______ (work )out the problem in another two minutes .
考点5.can’t wait to do sth 迫不及待地干某事
I can’t wait _____(open)the TV when I get home .
考点6.decide 的用法:
1).decide to do sth 决定干某事
2).decide not do sth 决定不干某事
3).decide on doing sth 决定干某事
4).同义词组:
make a decision to do sth = make up one’s mind to do sth = decide to do sth
He has decided to leave for Wuhan .=
He has ______ a _____ to leave for Wuhan.=
He has ____up his_____ to leave for Wuhan.
考点7.plan to do sth 计划干某事
She is planning ______(take )a vacation in Shanghai next month .
考点8.think about doing sth 考虑干某事
He thought about ______(go ) to Beijing on vacation .
考点9.go + v-ing 的用法:
go fishing go boating go skating go shopping go hiking go skateboarding
考点10.句型: It’s + adj +for /of sb to do sth
同义句：
1).It’s +adj +for sb +to do sth = To do sth + be +adj
2).It’s +adj +of sb +to do sth = Sb +be +adj + to do sth
It is very friendly of you to help me .=_____ _____ friendly to help me .
It’s very hard for you to work out the math problem .=
______ _____ out the math problem is very hard for you .
八年级英语上册期中知识点
1. It takes sb. some time to do sth. 花费某人某些时间去做某事,例如：
It takes me twenty minutes to get to school on foot every morning.每天早晨我步行到学校要花费二十分钟。
It will take three hours to finish the work.完成那项工作需要花费三个小时。
2.depend v. 依靠，依赖depend(常与on, upon连用)视情况而定
It all depends on how you tackle the problem.那要看你如何应付这问题而定。
Children must depend on their parents.孩子们必须依赖他们的父母
3.How do you get to/reach/arrive at school? 你怎样到达学校?
I ride to school./ I get to school by bike.骑车
I take a bus to school. / I get to school by bus.做公共汽车
I take the subway to get to school./I get to school by subway.坐地铁
I walk./ I get to scool on foot 走着去
4 .on/in+修饰词(形容词性物主代词;名词所有格;冠同等)+交通工具，强调乘坐某种交通工具。For example:
Jack goes to school on his bike.杰克骑车去学校
Mr. Green goes to work in his car every day. 格林先生每天开车去上班
5. How does Lucy go to school?(单三)路西怎么去学校?
She rides her bike. 她骑车去
6. How long does it take?那要花多长时间?
It takes twenty minutes. 花20分钟
7 .How long does it take them to get to the bus station?到汽车站得多久?
It takes them about two hours to get to the bus station.用了他们两个小时
8. How far is it from his home to school? 从家到学校有多远?
It is five miles. 五英里
9. We waited at the bus stop. 我们在公共汽车站等(车)。
10.The old man lives on a small pension.老人靠一小笔退休金生活。
11. I've never heard of anyone doing that. 我从未听说有人做那种事。
12. A town is bigger than a village but smaller than a city. town通常指“城镇、集镇、小镇”，对应于country/countryside.有时指城市里的闹市区或商业中心。
13. until用于肯定句中，表示动作一直持续到until所表示的时间为止。
I will wait here until the concert is over.我将一直在这儿等到音乐会结束。
14. not…until用于否定句中，表示动作的转折。意思为“直到……才”
主句的谓语动词是表示瞬间(终止性的)动作的词。
She can't leave until Friday.在星期五之前她不能离开