《初三英语》最新知识点推荐

三英语知识点：时间状语从句

连词主要有：when as while before after until as soon as since等。

(1)区别when, as, while的用法

①.when"当......时候"引导的时间状语从句，其动词既可以是延续性动作的动词，也可以是瞬间性动作的动词,如：_________ the students heard the teacher's footsteps, they all stopped talking.

当学生们听到老师的脚步声时，他们都停止了讲话。(从句动作发生在前)

② as"当.......时候"或"一边.......一边"引导的时间状语从句其动词的动作是延续性的，而且侧重表示主句和从句的动作并相发生，如：We were having breakfast __________ she was combing her hair.

她梳头时我们在吃早饭。

③ while表示"在某一段时间里"或"在……期间"，其所引导的从句的动作是延续性的，并侧重表示和主句的动作同时发生。如：I can learn ________ I work.

我可以边工作边学习。

(2)before引导的时间状语从句，指时间上的"在……之前"

I'll be back _____________.

你离开之前我就会回来。

(3)as soon as表示"一……就"，做题要注意主将从现

As soon as we __________ (get) there, he ___________ (tell) us the news.

我们一到那，他就会告诉我们那个消息。

(4) since引导的时间状语从句，从句的谓语动词通常为一般过去时，主句的谓语动词通常为现在完成时

We __________ never __________ (meet) since we ___________ (graduate) from the college.

大学毕业后我们就再没见过面。

(5) till/until引导的时间状语从句，till和until同义，作"直到……时(为止)"解，till多用于非正式文体，until多用于句首;not … until通常与after进行转换。如：I won't go with you until(till) I finished my homework.　=_________.

等我做完作业我才和你一起去。
 

初三年级的英语语法知识点

1、 一般现在时

(1) 表示经常发生的动作或现在存在的状态，常与 sometimes, always, often, every day 等时间状语连用。如：Sometimes, we go swimming after school.

(2) 表示客观真理、科学事实等。如：The earth goes round the sun.

2、 现在进行时

(1) 表示说话时或现阶段正在进行的动作，常与 now, at present 等时间状语连用。如：What are you doing now?

(2) 和always, continually 等连用，表一种经常反复的动作，常含有某种情感。如：He is always doing good deeds.

3、 现在完成时

主要表示动作发生在过去，对现在仍有影响，或动作一直延续到现在，或可能还要继续下去，常与just, already, so far, once, never 等词连用。如：Have you ever been to Beijing?

4、一般将来时

表示将来某一时间要发生的动作或存在的状态，常与 tomorrow, next year 等连用。如：I'll meet you at the school gate tomorrow morning.We're going to see a film next Monday.

5、一般过去时

表示在过去某一时间或某一阶段内发生的动作或存在的状态，常yesterday, last year, in 1998, a moment ago 等词连用。如：It happened many years ago.

6、过去进行时

表示过去某一时刻或某一时期正在发生的动作。如：What were you doing this time yesterday?

7、过去完成时

表示在过去某一时间或动作之前已经发生或完成了的动作。如：The train had already left before we arrived.

8、一般过去将来时

表示说话人从过去的角度来看将来发生的动作。如：He said he would come, but he didn't.

9、被动语态的时态
 

八大时态的被动语态的构成：

1）一般现在时：（am/is/are +done）

如：I am asked to study hard. 我被请求努力学习。

2）一般过去时：（was/were done）

如：The soldier was killed, but the train was saved. 这位战士牺牲了，然而列车得救了。

3)一般将来时：（shall/will be done）

如：We shall be asked a lot of strange questions. 我们将被问许多怪题。

4）过去将来时：（should/would be done）

如：The news would be sent to him as soon as it arrived. 消息一到就会转给他的。

5）现在完成时：（has/have been done）

如：The work has just been finished. 工作刚刚结束。

6）过去完成时：（had been done）

如：By last December three ships had been built by them. 到去年十二月底他们已建造了三艘船。

7）现在进行时：（am/is/are being done）

如：The bridge is being repaired. 桥梁正在修复中。

8）过去进行时：（was/were being done）

如：A meeting was being held when I was there. 我在时，会议在开着。

初三英语知识点：With的复合结构作独立主格

表伴随时，既可用分词的独立结构，也可用with的复合结构。

with +名词(代词)+现在分词/过去分词/形容词/副词/不定式/介词短语

举例:

He stood there, his hand raised.

= He stood there, with his hand raise.

典型例题:

The murder was brought in, with his hands ___ behind his back。

A. being tied　 B. having tied　　C. to be tied　　D. tied

答案D. with +名词(代词)+分词+介词短语结构。当分词表示伴随状况时，其主语常常用with来引导。由于本句中名词"手"与分词"绑"是被动关系，因此用过去分词，选D.
 

初三英语知识点：独立主格结构的特点

(1)独立主格结构的逻辑主语与句子的主语不同，它独立存在。

(2)名词或代词与后面的分词，形容词，副词，不定 式，介词等是主谓关系。

(3)独立主格结构一般有逗号与主句分开。

举例：

The test finished, we began our holiday.

= When the test was finished, we began our holiday.

考试结束了，我们开始放假。

The president assassinated, the whole country was in deep sorrow.

= After the president was assassinated, the whole country was in deep sorrow.

总统被谋杀了，举国上下沉浸在悲哀之中。

Weather permitting, we are going to visit you tomorrow.

如果天气允许，我们明天去看你。

This done, we went home.

工作完成后，我们才回家。
 

初三英语知识点：关联指代句型分类及应用

一． 两相关联

1.句型[…two…: one…, (and) the other…]/[…two…: one…, (and) another…]

(1) There are two books on the table: one is Chinese and the other, English.

(2) Every time you breathe, you breathe two different breaths. You take in one and give out another.

(3) There are three balls. One is black and the others are white.

2.句型[…one (thing)…, (and/but)… another…]

(1) It is one thing to flourish and another to fight.

(2) To say is one thing, but to do is another.

(3) It is one thing to learn, and another to teach. 4. To know is one thing, to practise is another

3.句型[On (the) one hand, …and on the other (hand)…]

(1) On the one hand, I am your teacher, and on the other, I am also your comrade and friend.

(2) They have been blamed on one hand and lauded on the other.

(3) On the one hand, you shouldn't be shy, on the other hand, you mustn't forget your manners.