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初三英语知识点大全
在现实学习生活中，大家最熟悉的就是知识点吧？知识点也可以通俗的理解为重要的内容。相信很多人都在为知识点发愁，以下是小编精心整理的初三英语知识点大全，欢迎大家分享。
初三英语知识点大全1
重点语法
一般现在时的被动语态
一.概念理解
1.时态：在英语语言中，时态主要讨论行为动词发生的时间。
如：He often helps me with my English.他经常帮助我学英语。(help这个动作经常发生often;故用一般现在时)
2.语态：在英语语言中，语态主要讨论句子主语与行为动词的关系。语态有两种：主动语态和被动语态。
①主语是动作的发出者(执行者)为主动语态。
如：The tall boy often hits his classmates (主语boy是谓语动词hit的发出者)。
②主语是动作的接受者(承受者)为被动语态。汉语中常用“被”、“给”、“由”、“受”等词用来表示被动，而英语用：助动词be +及物动词的过去分词构成
如：Chinese is spoken by the most people in the world(主语Chinese是谓语动词speak的承受者)。
3.语态与时态的关系：在任何一个英语句子中都同时存在语态和时态，他们是分析一个英语句子的.两个主要元素。
如：① He is looking after his sister at home. (此句为现在进行时的主动语态结构)
② He is being looked after well by his parents. (此句为现在进行时的被动语态结构)
二.被动语态最基本的句型结构：be +及物动词过去分词
说明：① be有时态，人称和数的变化。
②被动语态中的谓语动词必须是及物动词;因为被动句中的主语是动作的承受者，某些短语动词如look after, think of, take care of, work out, laugh at等，也可用于被动语态。
三.被动语态的使用
1.当不知道或没有必要指出动作的执行者时，常用被动语态，这时往往不用by短语。
Mr. White, the cup with mixture was broken after class. (只是告诉老师杯子坏了，不知是谁弄坏的，或不想说出谁弄坏的)。
2.突出或强调动作的承受者，如果需要说出动作的执行者，用by短语。
如：The cup was broken by Paul.
四.主动语态变被动语态的变法：主动语态与被动语态之间如何转换
1.把主动语态的宾语变成被动语态的主语。
2.把主动语态的谓语变成被动语态的be +过去分词，时态要与原句保持一致。
3.把主动语态的主语变为介词by的宾语，放在被动语态里谓语动词之后，by短语可以省略。如果原句主语是地点名词，在被动语态中用in +地点名词作状语。
五.一般现在时的被动语态：am /is/ are +done
如：Tea is grown in Hangzhou.杭州种植茶叶。
Unit6 When was it invented?
【重点短语】
1. by accident偶然地;意外地
2. without doubt毫无疑问的;的确
3. by mistake错误地
4. look up to钦佩;仰慕
5. take place发生;出现
6. all of a sudden突然;猛地
7. divide…into…把……分成......
8. the Olympics奥林匹克运动会
9. the style of ……的样式
10. be used for被用于……
九年级英语全一册课本目录
Unit 1 How can we become good learners?
Unit 2 I think that mooncakes are delicious!
Unit 3 Could you please tell me where the restrooms are?
Unit 4 I used to be afraid of the dark.
Unit 5 What are the shirts made of?
Unit 6 When was it invented?
Unit 7 Teenagers should be allowed to choose their own clothes.
Unit 8 It must belong to Carla.
Unit 9 I like music that I can dance to.
Unit 10 You 're supposed to shake hands.
Unit 11 Sad movies make me cry.
Unit 12 Life is full of the unexpected.
Unit 13 We're trying to save the earth!
Unit 14 I remember meeting all of you in Grade 7
初三英语知识点大全2
结果状语从句
(1)结果状语从句由so…that, such…that, so that引导。例如：
He is so poor that he can’t buy a bike for his son.
She is such a good teacher that everybody likes her.
My pencil fell under the desk, so that I couldn’t see it.
(2)so…that语such...that可以互换。例如：
在由so...that引导的结果状语从句中，so是副词，与形容词连用。其结构是: “...so +形容词(副词)+ that +从句”。例如：
He was so glad that he couldn’t say a word.
The hall is so big that it can hold 2,000 people.
Mother lives so far away that we hardly ever see her.
在由such…that引导的.结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词;名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。例如：
It was such a hot day that nobody wanted to do anything.
He had such long arms that he could almost touch the ceiling.
He made such rapid progress that he did very well in the mid-term.
有时上述两种结构是可以互换的。例如：
It was such a wonderful film that all of us wanted to see it again.
=The film was so wonderful that all of us wanted to see it again.
It is such an important match that nobody wants to miss it.
=The match is so important that nobody wants to miss it.
(3)如果名词前由many, much, little, few等词修饰时，只能用so,不用such。例如：
Soon there were so many deer that they ate up all the wild roses.
He has so little time that he can’t go to the cinema with you.
初三英语知识点大全3
被动语态
被动语态由助动词be加及物动词的过去分词构成，助动词be有时态，人称和数的变化。被动语态的时态是由be的时态决定的，be是什么时态，全句就是什么时态，be动词后面的过去分词不变。
1、各种时态的被动语态结构如下：
一般现在时的被动语态：
主语+am / is / are (not)+过去分词
一般过去时的被动语态：
主语+was / were +过去分词
现在完成时的被动语态：
主语+have / has +been +过去分词
一般将来时的被动语态：
主语+will +be +过去分词
过去将来时的被动语态：
主语+would / should + be +过去分词
过去进行时的.被动语态：
主语+was / were + being +过去分词
过去完成时的被动语态：
主语+had + been +过去分词
情态动词的被动语态：
情态动词+be+过去分词
2、被动语态的用法
(1)不知道或没有必要说明动作的执行者是谁，不用by+动作执行者短语。
Football is played widely all over the world。
全世界都广泛地踢足球。
(2)强调动作的承受者。
The bank was robbed yesterday afternoon。
昨天下午这家银行遭到抢劫。
(3)作客观说明时，常采用一种被动语态句型。
It is reported that about twenty children have died of flu in the USA。
初三英语知识点大全4
一、名词单复数
加es构成复数的.名词：
beach—beaches
box—boxes
class—classes
glass—glasses
hero—heroes
match—matches
potato—potatoes
sandwich—sandwiches
tomato—tomatoes
watch—watches
将f或fe改为v加es构成复数的名词：
knife—knives
leaf—leaves
life—lives
shelf—shelves
wife—wives
wolf—wolves
复数变化不规则的名词：
child—children
Chinese—chinese
fireman—firemen
fish—fish/fishes
foot—feet
Japanese—Japanese
man—men
mouse—mice
policeman—policemen
postman—plstmen
salesman—salesmen
sheep—sheep
tooth—teeth
woman—women
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