初二英语语法重点知识点归纳
学想要好英语，最主要就是学好语法，那么初二英语语法重点知识点有哪些?下面是学习啦小编分享给大家的初二英语语法重点知识点，希望大家喜欢!
初二英语宾语从句重点知识点
定义：用一个句子充当宾语的叫宾语从句。宾语从句在复合句中作主句的宾语。常见的宾语从句有以下三种。
1.由that引导，由于that没有任何意义，也不充当任何句子成分。因此that在非正式文体中可以省略。这类宾语从句通常表达一种陈述意义。
e.g.He told me (that) he would go to Wuhan.
Tom says (that) he must study hard.
She told me (that) she was a student.
(1)如果由and连接两个并列的宾语从句时，第二个that则不能省略。
e.g.She said she liked English very much and that she didn’t like math at all.
(2)常接that引导的宾语从句的谓语动词有：believe, expect, explain, feel, hear, hope, imagine, prefer, promise, report, say, see, tell, think, understand, warn, wish等。
2.由连接代词或连接副词who, whose, what, which, when, where, how, why引导，含有“谁、什么、哪个、什么时候、什么地方、怎样、为什么”等特殊疑问意义。
e.g.Do you know who they’re talking about?
Can you tell me what they’re looking for?
I don’t know where she has gone.
I wonder how she can find us.
She didn’t tell me where her hometown was.
3.由从属连词whether和if引导，含有“是否，能否，对否，有否”等一般疑问意义。
e.g.She asked me if I could help her.
Jim wanted to know whether I had taken his English book.
Please tell me whether you can come or not.
在这类宾语从句中要注意两点：
(1)if引导宾语从句和状语从句的区别
if引导宾语从句时意为“是否”，从句中该用什么时态就应用什么时态。
if引导条件状语从句时意为“假如”，从句中应用一般现在时代替一般将来时。
e.g.She wanted to know if you were a teacher.
I don’t know if the letter is yours.
They’ll go boating if it is fine tomorrow.
I’ll give it to her if she comes next week.
(2)if引导宾语从句时多数情况下可以与whether互换，但如果要突出“究竟是……还是不……”这层意思时，通常用whether，并在后面的加上“or not”，即一般要选择whether构成whether…or not的结构。
e.g.Please find out whether the money is his or not.
Let me know whether you can come or not.
I want to know whether you can help me or not.
注意：
1.宾语从句的语序问题
以上介绍了三种宾语从句，同学们一定要注意，在疑问词或if/whether引导的宾语从句中，一定要用陈述句语序。
e.g.She asked how old I was.
We don’t know where her office is.
My teacher wanted to know if I like English.
2.宾语从句的时态问题
一般情况下宾语从句的时态必须和主句的时态保持一致：
当主句的谓语动词是一般现在时时，宾语从句中的谓语动词不受时态限制。
e.g.She says that she is a student.
She says that she was a student two years ago.
She says that she will be a college student soon.
She says that she has been a college student for 3 years.
当主句的谓语动词是过去时时，宾语从句中只能用过去的某种时态。
e.g.He told me that he would leave soon.
He said that he was watching TV.
He didn’t tell me whether he had finished this homework.
但如果宾语从句中讲述的客观事实、一般真理或自然现象时，则不受它限制。
e.g.My teacher told us that Yangtze River is the longest river in our country.
Father said (that) the sun always rises in the east.
初二英语状语从句重点知识点
状语从句主要用来修饰主句或主句的谓语。一般可分为九大类，分别表示时间、地点、原因、目的、结果、条件、让步、比较和方式。尽管种类较多，但由于状语从句与汉语结构和用法相似，所以理解和掌握它并不难。状语从句的关键是要掌握引导不同状语从句的常用连接词和特殊的连接词即考点。现分别列举如下：
1.时间状语从句
常用引导词：when, as, while, as soon as, before, after, since, till, until, whenever
e.g.Don’t come in until you are called.
While John was watching TV, his wife was cooking.
I called my mother as soon as I reached Shanghai.
I have been an English teacher since I came to the school.
2.地点状语从句
常用引导词：where, wherever
e.g.Generally, air will be heavily polluted where there are factories.
Wherever you go, you should work hard.
3.原因状语从句
常用引导词：because, since, as, for
e.g.I didn’t go surfing because it was too cold.
As the car was expensive, we didn’t buy it.
Since he was busy, he didn’t come.
4.目的状语从句
常用引导词：so that, in order that
e.g.You should talk to him so that/in order that you can say you are sorry.
5.结果状语从句
常用引导词：so…that, such…that
e.g.He got up so early that he caught the first bus.
It’s such a good chance that we must not miss it.
6.条件状语从句
常用引导词：if, unless, as long as
e.g.We’ll start our project if the president agrees.
You will certainly succeed so long as you keep on trying.
注意：在时间状语从句和条件状语从句中通常用一般现在时表一般将来时间。
e.g.—When will Lisa come back?
—Sorry I don’t know. When she comes back, I will call you.
If you go to the party, you’ll have a good time.
Unless it rains tomorrow, we will go for a picnic.
7.让步状语从句
常用引导词：though, although, even if, even though
e.g.Although the traffic was heavy, we got to the railway station on time.
Even though he is 80, he still looks strong and healthy.
8、比较状语从句
常用引导词：as(同级比较), than(两者之间不同程度的比较)
e.g.She is as hard-working as her Lucy.
John swims better than Jim (does).
9.方式状语从句
常用引导词：as, as if
e.g.When in Rome, do as the Roman do.
She behaved as if she were the boss.
初二英语语法易错重点知识点
一.动词be(is,am,are)的用法
我(I)用am, 你(you)用are，is跟着他(he)，她(she)，它(it)。单数名词用is，复数名词全用are。变否定，更容易，be后not加上去。变疑问，往前提，句末问号莫丢弃。还有一条须注意，句首大写莫忘记。
二.this，that和it用法
(1)this和that是指示代词，it是人称代词。
(2)距离说话人近的人或物用this, 距离说话人远的人或物用that。如：
This is a flower. 这是一朵花。(近处)
That is a tree. 那是一棵树。(远处)
(3)放在一起的两样东西，先说this, 后说that。如：
This is a pen. That is a pencil. 这是一支钢笔。那是一支铅笔。
(4)向别人介绍某人时说This is…, 不说That is…。如：
This is Helen. Helen, this is Tom. 这是海伦，海伦，这是汤姆。
(5)This is 不能缩写, 而That is可以缩写。如：
This is a bike. That’s a car. 这是一辆自行车。那是一辆轿车。
(6)打电话时，介绍自己用this, 询问对方用that。如：
—Hello! Is that Miss Green? 喂，是格林小姐吗?
—Yes, this is. Who’s that? 是的，我是，你是谁?
注意：虽然汉语中使用“我”和“你”，但英语中打电话时绝不可以说：I am…, Are you…?/Who are you?
(7)在回答this或that作主语的疑问句时, 要用it代替this或that。如：
①—Is this a notebook? 这是笔记本吗?
—Yes, it is. 是的，它是。
②—What’s that? 那是什么?
—It’s a kite. 是只风筝。
三.these和those用法
this, that, these和those是指示代词，these是this的复数形式,指时间,距离较近的或下面要提到的人或事;those是that的复数形式,指时间、距离较远或前面已经提到过的人或事物。
①This is my bed. That is Lily’s bed. 这是我的床。那是莉莉的床。
②These pictures are good. 那些画很好。
③ Are those apple trees? 那些是苹果树吗?
在回答主语是these或those的疑问句时，通常用they代替these或those以避免重复。如：
④Are these/those your apples? 这些(那些)是你的苹果吗?
Yes, they are. 是的，他们是。
四.不定冠词a和an
a和an都是不定冠词，表示一(个，支，本，块……)的意思，但不强调数量概念，而是强调类别，用来限定名词。a用在辅音素开头的单数名词前，如：a pencil(一支铅笔)，a book(一本书);an用在元音音素开头的名词前，如an eraser(一块橡皮)。如果名词前有修饰语，用a还是用an，则以该修饰语的第一音素决定用a还是用an。如：
a clock 一座钟 an old clock 一座旧钟 a book 一本书 an English book 一本英语书
a nice apple 一个可爱的苹果 an apple 一个苹果
五.名词+’s所有格
名词+’s所有格
单数名词后直接加 “ ’s ”
Jim’s coat 吉姆的外套 Jeff’s mother杰夫的妈妈
以s结尾的复数名词，只加“’”
Teachers’ Day教师节 the twins’ books双胞胎的书
不以s结尾的不规则的名词复数，加“ ’s ”
Children’s Day 儿童节 men’s shoes男式鞋
表示两者共同拥有时，只在最后一个名词后加’s
表示两者各自拥有时，要在每个名词后加’s
Lucy and Lily’s mother 露茜和莉莉的妈妈(共同的妈妈，一个妈妈)
Lucy’s and Kate’s rooms 露茜和凯特的房间(各自的房间，两间房子)
六.There be句型
(1)There be句型主要用以表达“某处(某时)有某人(某物)。”其基本结构为“There be+某物(某人)+某地(某时)”其中there是引导词，没有词义;主语是be后面的名词， be是谓语动词，在一般现在时中be只用is和are两种形式。下面这首歌诀可帮你巧记there be句型结构：
There be放句首，主语跟在后。地、时放句末，强调置前头。如：
There is a book on the desk.
有时为了强调地点，也可把介词短语放在句首。如：
On the desk there is a book.
(2)There be句型中的be动词如何确定呢?请先看看下面这首歌诀：
Be动词，有三个，am，is还有are。“There be”真特别，不留am只留俩，那就是is还有are。要用is还是are，须看其后的名词是单数还是复数。若是单数或不可数名词用is，否则就用are。如：
①There is a tree behind the house.
②There is some water(水)in the bottle(瓶子).
③There are some pears in the box.
(3)注意：如果“be”后的主语是由and连接的两个或两个以上的名词，那么be的形式要遵循“远亲不如近邻”的原则。也就是说，“be”的形式是由与它最近的那个名词来确定的。若那个名词是单数或不可数名词要用is，是复数就用are。如：
①There is a book and some pens on the floor.
②There are some pens and a book on the floor.
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