高三英语语法知识点经典

　　名词性从句指充当名词成分的从句，下分很多类型，是英语学习的重点，具体都有哪些知识点呢?小编整理了相关资料，希望能帮助到您。

高三英语语法知识点经典 1

高三英语语法知识点经典 2

表语从句

用来作主语的句子叫做主语从句。如：

(1)When he was born is unknown. 他生于何时还不知道。

(2)What he did last night is being investigated. 他昨天晚上干了些什么正在调查之中。

在主语从句中须注意：

1. 主语从句一般用it作形式主语，放在句首，而将主语从句放到句末。如：

(1)It is possible that he has stolen the car. 很可能他偷了小车。

(2)Isn’t it strange that he should not have passed the test? 他测试没有通过，难道不奇怪吗?

2. if引导主语从句时，只能用it作形式主语，放在句首，而将if引导的主语从句放到句末。如：

It is uncertain if he will leave for Beijing tomorrow. 明天他是否去北京还不敢肯定。

3. that引导主语从句放在句首时，that不可省，但在句末口语中可省。如：

That he was ill yesterday is known now. 大家都已知道他昨天生了病。

4. 连接代词引导主语从句只能放在句首。如;

(1)Who has broken the glass is unknown. 谁打破了玻璃现在还不知道。

(2)What he wants is all here. 他所要的东西都在这里。

5. 主语从句中主句的谓语动词一般用第三人称单数形式，但what引导主语从句的主句谓语动词的形式须根据句子的意思来判断。如

(1)How he worked it out is still a secret. 他是如何把它做出来的还是一个秘密

(2)What they makes in this factory are TV sets. 他们在工厂里所做的东西就是电视机。

高三英语语法知识点经典 3

　　1、when时间状语

　　注意：It/Ihis/That + be + the first/ second/ last time that… 只能用that,that可以省略，从句用相应的完成时。

　　2、where 地点状语

　　注意：当先行词为模糊的地点时，如point. Situation, case, position, stage, scene, spot, activity, family, job等名词时用where.

　　3、why 原因状语 先行词为reason。

高三英语语法知识点经典 4

语态有两种：主动语态和被动语态。

主语是动作的发出者为主动语态;主语是动作的接受者为被动语态。

1)若宾语补足语是不带to 的不定式，变为被动语态　时，该不定式前要加"to"。此类动词为感官动词。

feel, hear, help, listen to, look at, make, observe, see, notice, watch

The teacher made me go out of the classroom.

--> I was made to go out of the classroom (by the teacher).

We saw him play football on the playground.

--> He was seen to play football on the playground.

2)情态动词+ be +过去分词，构成被动语态。

Coal can be used to produce electricity for agriculture and industry.

琴声悠悠550字1 let 的用法

1)当let后只有一个单音节动词，变被动语态时，可用不带to 的不定式。

They let the strange go.---> The strange was let go.

2) 若let 后宾补较长时，let 通常不用被动语态，而用allow或permit 代替。

The nurse let me go to see my classmate in the hospital.

----> I was allowed / permitted to see my classmate in the hospital.

高三英语语法知识点经典 5

under age 未成年，未达到规定年龄

He was rejected by the army because he was under age. 他因尚未成年而被拒绝参军。

You shouldn’t sell cigarettes to teenagers who are under age. 你不应该把香烟卖给没未成年的青少年。

under arrest 被捕

You are under arrest in the name of the law. 你被依法逮捕了。

He was soon put [placed] under arrest. 他不久就被逮捕了。

under attack遭受攻击

The company has come under fierce attack for its decision to close the factory. 因为决定要关闭工厂，公司受到猛烈攻击。

under consideration 在考虑中;在研究中

The question is now under consideration. 这个问题正在考虑中。

The plan is under consideration by the Ministry of Education. 教育部正在研究这个方案。

under construction 在建造中

The new railway is under construction. 新铁路正在修建当中。

The bridge is under construction. 这座桥正在建造中。

There are two new hotels near here under construction. 附近正在兴建两家新的旅馆。

under control 在控制中

They soon got the fire under control. 他们很快把火势控制住。

It took the teacher months to bring his class under control. 这个老师花了几个月的时间才管住了他的班级。

under copyright 享有版权

The poem is still under copyright, so you have to pay to quote it. 该诗仍然享有版权，因此你必须支付引用费。

under cover 在隐蔽处;秘密地;在信封或邮包中

Plans for the attack were made under cover. 进攻计划是秘密制定的。

The check came under cover in yesterday’s mail. 支票是装在信封里和昨天的信一道寄来的。

under discussion 在讨论中;在审议中

That has no relation to the matter under discussion. 那与正在讨论的事无关。

That’s another topic that will come under discussion. 那是另一个要讨论的问题。

under examination 在检查中;在审查中

The prisoner was still under examination. 囚犯仍受审。

The proposals are still under examination. 提案仍在审查中。

under fire 在炮火中;被攻击中

We were under fire from all sides. 我们遭到了来自四面八方的射击。

The headmaster was under fire for not sending the boys home who stole the car. 校长由于没有开除那几个偷汽车的学生，受到责难。

under guarantee 在保修期内

It’s still under guarantee, so the manufacturer will repair it. 保证书还有效，所以厂家会给修理的。

The car is still under guarantee, so you should be able to get it repaired free of charge. 汽车还在保修期内，所以你应该可以免费修理。

under oath 在法庭上宣过誓要说实话

The judge reminded the witness that he was still under oath. 那法官提醒证人他已宣誓不作伪证。

under obligation 有义务;一定要

The one who did the damage in under obligation to pay for it. 造成损失的人有义务赔偿。

【注】在现代英语中通常用under an [no] obligation的形式：

You’re under no obligation to pay for goods which you did not order. 没有订购的货物就无须付款。

She’s under an obligation to him because he lent her money. 因为他把钱错给她了，所以她有偿还他的义务。