学习是快乐的,学习是幸福的,虽然在学习的道路上我们会遇到许多困难,但是只要努力解决这些困难后,你将会感觉到无比的轻松与快乐,所以我想让大家和我一起进入学习的海洋中,去共同享受快乐。下面小编为大家带来有关初三英语下册知识点,希望大家喜欢!
初三英语下册知识点
一、介词by的用法
1. 意为“在……旁”,“靠近”。
Some are singing and dancing under a big tree. Some are drawing by the lake.
有的在大树下唱歌跳舞。有的在湖边画画儿。
2. 意为“不迟于”,“到……时为止”。
Your son will be all right by supper time.
你的儿子在晚饭前会好的。
How many English songs had you learned by the end of last term?
到上个学期末你们已经学了多少首英语歌曲?
3. 表示方法、手段,可译作“靠”、“用”、“凭借”、“通过”、“乘坐”等。
The monkey was hanging from the tree by his tail and laughing.
猴子用尾巴吊在树上哈哈大笑。
The boy’s father was so thankful that he taught Edison how to send messages by railway telegraph.
孩子的父亲是那么的感激,于是他教爱迪生怎样通过铁路电报来传达信息。
4. 表示“逐个”,“逐批”的意思。
One by one they went past the table in the dark.
他们一个一个得在黑暗中经过这张桌子。
5. 表示“根据”,“按照”的意思。
What time is it by your watch?
你的表几点了?
6. 和take , hold等动词连用,说明接触身体的某一部分。
I took him by the hand.
我拉住了他的手。
7. 用于被动句中,表示行为主体,常译作“被”、“由”等。
English is spoken by many people.
英语被许多人说。(即“许多人讲英语。”)
二、动名词(doing)
动名词相当于名词,在句子中可以做主语、宾语、表语、定语等。
1. 作主语
Fighting broke out between the South and the North.
南方与北方开战了。
2. 作宾语
Would you mind turning down your radio a little, please?
请问你介意调小一点收音机的音量吗?
3. 作表语
Babysister’s job is washing,cooking and taking care of the children.
保姆的工作是洗衣服,作饭和照看孩子。
4. 做定语
a washing machine 一台洗衣机
三、used to 的用法
used to 意为过去常常做某事。
used to 的用法:
1. 肯定句:used这个词没有人称的变化,to后面接动词原形。
否定句是didn’t use to….
When I was a child, I didn’t use to like apples.
当我还是孩子的时候我不喜欢苹果。
疑问形式是Did you use to…?
Where did you use to live before you came here?
当你来这儿之前你住哪儿?
2. 含有used to 的句子的反意疑问句不要usedn’t + 主语,而用didn’t + 主语。
——He used to smoke, didn’t he?
——他过去常常吸烟,是吗?
Yes, he did./ No, he didn’t.
是的,他吸。/ 不,他不吸。
初三英语下学期知识点
1. must
(1)must 表示主观看法,意为“必须”。
如:You must stay here until I come back.
Must I hand in my homework right now?
对must引导的疑问句,肯定回答为must,否定回答为needn’t 或don’t have to .
如:—Must I finish my homework?
—No, you needn’t.
(2)must也可以表示有把握的推测,意为“ 一定,肯定”,用于肯定句。
如: The light is on, so he must be at home now.
其否定形式mustn’t表示“禁止,不许”。
如:You mustn’t play with fire.
You mustn’t be late.
2. could
(1)can的过去式,意为“能、会”,表示过去的能力。
如:He could write poems when he was 10.
(2)could在疑问句中,表示委婉请求的语气,此时could没有过去式的意思。
如:Could you do me a favour?
—Could I use your pen?
—Yes, you can.(注意回答)
3. might
might为may的过去式。might表示推测时,表示可能性低于may(此时might没有过去式的意思),当请求讲时,比may的语气更委婉。
如:He is away from school. He might be sick.
Might I use your dictionary?
4. can
(1)表示能力,一般译为“能、会”,尤其指生来具备的能力。
如:She can swim fast, but I can’t .
(2)表示许可,常在口语中。
如:You can use my dictionary.
(3)表示推测,意为“可能”,常用于否定句和疑问句中,此时can’t译为“不可能”。
如:—Can the news be true?
—No, it can’t be our teacher. He is on a visit to the Great Wall.
初三英语下册期中知识点
(一)need和dare的用法
need和dare既可用作情态动词,也可用作实义动词。用作情态动词时,主要用于否定句和疑问句。用作实义动词时,可用于各种句式。
1.用作情态动词--Need I come? --Yes, you must. --我需要来吗? --需要。 You needn't telephone him now. 你现在不必打电话给他。
I don't think you need worry. 我想你不必发愁。
She dare not go out alone at night. 她晚上不敢一个人出去。
How dare you say I'm unfair? 你竟敢说我不公平?
Not one of them dared mention this. 他们谁也不敢提这件事。
2.用作实义动词You don't need to do it yourself. 你不必亲自做这件事。 We need to tell them the news. 我们需要把这消息告诉他们。
The table needs painting (to be painted.). 桌子需要油漆一下。
We should dare to give our own opinion. 我们要敢于提出自己的观点。
He did not dare (to) look up. 他不敢抬头看。
I dare day he'll come again. 我想他会再来的。(I dare say…为固定习语)
(二)情态动词后跟完完成这项工作的。
He isn't here. He must have missed the train. 他还未到,一定是没赶上火车。 Where can (could) he gone? 他能到那里去了呢?
You may (might) have read about it. 你可能在报上已经读到这件事了。 You could (might) have been more careful. 你本来可以更细心的。
He needn't have worried it. 他本不必为此事担心。
There was a lot of fun at yesterday's party. You ought to have come, but why didn't you? 昨天的聚会非常有意思。你本应该来,为何不来呢?
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