初二英语上册语法知识主要有：1、形容词和副词的比较等级（原级,比较级和最高级）
比较级是用于两者间的比较,即比较级+than 结构.最高级表示三者或三者以上的人或事物的比较,形容词最高级前一定要加the ,后面可以带of 或in 短语来说明比较范围.如 He is the tallest in our class,
2.要掌握as --as --和not as(so ) --as--句式.表示两者当中在某一方面相同时用as --as --,如I think science is as important as math.表示甲在某一方面不如乙时要用not as (so) --as--如He did not come as\so early as Wang Lin.
3动词的种类：分行为动词、连系动词、助动词、和情态动词四种.
4、动词的时态.
（1）现在进行时可以用来表示按计划或安排将要进行的动作,有意图或打算等含义.如
What are you doing for vacation?I'm visiting my friends in Hong Kong.
(2) "be going to +动词原形”表示将要发生的事或打算、计划、决定要做的事情.如
We are going to the Great Wall on Sunday morning.
5,简单句的五种基本类型
S +V We often exercise.S + V +O He likes swimming.S +V+ P They are my friends.
S +V +INO+ DO .She gave me a gift.S+V+O+OC He made the boy laugh.等
6宾语从句：（1）由that 引导（that 在口语或非正式文体中常省略）如
I don't think (that ) she can speak French.
(2) 由连接代词或连接副词引导,如
I want to know where she lives.
(3) 由whether 或if 来引导（口语中常用if )
She asked me if she could borrow these books.
