英語初三知識點精選匯總?cè)私贪?/p>
上學(xué)期間，說起知識點，應(yīng)該沒有人不熟悉吧？知識點是知識中的最小單位，最具體的內(nèi)容，有時候也叫“考點”。還在為沒有系統(tǒng)的知識點而發(fā)愁嗎？以下是小編精心整理的英語初三知識點精選匯總?cè)私贪妫瑲g迎大家分享。
①aloud是副詞,重點在出聲能讓人聽見,但聲音不一定很大,常用在讀書或說話上。通常放在動詞之后。aloud沒有比較級
形式。如: He read the story aloud to his son.
他朗讀那篇故事給他兒子聽。
②loud可作形容詞或副詞。用作副詞時,常與speak, talk,laugh等動詞連用,多用于比較級,須放在動詞之后。如:
She told us to speak a little louder.她讓我們說大聲一點。
③loudly是副詞,與loud同義,有時兩者可替換使用,但往往
含有令人討厭或打擾別人的意思,可位于動詞之前或之后。如: He does not talk loudly or laugh loudly in public.他不當眾大聲談笑。
【Unit2】
1. used to do sth.過去常常做某事
否定形式：didnt use to do sth. / used not to do sth.
如：He used to play football after school.放學(xué)后他過去常常踢足球。
Did he use to play football? Yes, I did. No, I didnt.
He didnt use to smoke.他過去不吸煙。
2.反意疑問句
①肯定陳述句+否定提問如：Lily is a student, isnt she?
Lily will go to China, wont she?
②否定陳述句+肯定提問如：
She doesnt come from China, does she?
You havent finished homework, have you?
③提問部分用代詞而不用名詞Lily is a student, isnt she?
④陳述句中含有否定意義的詞，如：little, few, never, nothing, hardly等。其反意疑問句用肯定式。如：
He knows little English, does he?他一點也不懂英語，不是嗎?
They hardly understood it, did they?他們幾乎不明白，不是嗎?
3. play the piano彈鋼琴
4. ①be interested in sth.對…感興趣
②be interested in doing sth.對做…感興趣
如：He is interested in math, but he isnt interested in speaking
English.他對數(shù)學(xué)感興趣，但是他對說英語不感興趣。
5. interested adj.感興趣的，指人對某事物感興趣，往往主語是人
interesting adj.有趣的，指某事物/某人具有趣味，主語往往是物
6. still仍然，還
用在be動詞的后面如：Im still a student.
用在行為動詞的前面如：I still love him.
7. the dark天黑，晚上，黑暗
8.害怕… be terrified of sth.如：I am terrified of the dog.
be terrified of doing sth.如：I am terrified of speaking.
【Unit3】
1. allow sb. to do sth.允許某人做某事(主動語態(tài))如：
Mother allows me to watch TV every night.媽媽允許我每晚看電視。
be allowed to do sth.被允許做某事(被動語態(tài))如：
LiLy is allowed to go to Qinzhou.莉莉被允許去欽州。
2. get their ears pierced穿耳洞
讓/使(別人)做某事get sth. done(過去分詞)
have sth. done如：
I get my car made. == I have my car made.我讓別人修好我的車
3. enough足夠
形容詞+enough如：beautiful enough足夠漂亮
enough+名詞如：enough food足夠食物
enough to足夠…去做…如：
I have enough money to go to Beijing.我有足夠的錢去北京。
She is old enough to go to school.她夠大去讀書了。
4. stop doing sth.停止做某事Please stop speaking.請停止說話。
stop to do sth.停止下來去做某事Please stop to speak.
請停下來說話。
5.看起來好像…sb. seem to do sth. He seems to feel very sad.
it seems that +從句It seems that he feels very sad.他看起來好像很傷心。
6.系動詞不能獨立作謂語，要和表語一起構(gòu)成謂語。常用的連系動詞有：look, feel, be, become, get, turn, smell, taste, stay(保持), kept等。連系動詞除be和become等少數(shù)詞可接名詞作表語外，一般都是接形容詞。如：
They are very happy. He became a doctor two years ago.
She felt very tired.
英語初三知識點
一、介詞篇：
1.介詞的功能
介詞是一種虛詞，用來表示名詞或相當于名詞的其它詞語句中其它詞的關(guān)系，不能單獨使用。介詞可與名詞或相當于名詞的其它詞構(gòu)成介詞短語。介詞短語可在句中作定語，狀語，表語和賓語補足語。例如：
The boy over there is John’s brother. (定語)
The girl will be back in two hours. (狀語)
Our English teacher is from Australia. (表語)
Help yourself to some fish. (賓語補足語)
2.常用介詞的用法辨析
(1)表時間的介詞
at, in on
表示時間點用at。例如：at six o’clock, at noon, at midnight。表示在某個世紀，某年，某月，某個季節(jié)以及早晨，上午，下午，晚上時，用in。例如：in the ninettenth century, in 2002, in may, in winter, in the morning, in the afternoon等。表示具體的某一天和某一天的上午，下午，晚上時，用on。例如：on Monday, on July 1st, on Sunday morning等。
since, after
由since和after 引導(dǎo)的詞組都可表示從過去某一點開始的時段，但since詞組表示的時段一直延續(xù)到說話的時刻，因而往往要與現(xiàn)在完成時連用。而after詞組所表示的時段純系過去，因而要與一般過去時連用。例如：
I haven’t heard from him since last summer.
After five days the boy came back.
in, after
in與將來時態(tài)連用時，表示“過多長時間以后”的意思，后面跟表示一段時間的詞語。After與將來時態(tài)連用時，后面只能跟表示時間點的詞語。After與過去時態(tài)連用時，后面才能跟表示一段時間的詞語。例如：
He will be back in two months.
He will arrive after four o’clock.
He returned after a month.
(2)表示地點的介詞
at, in, on
at一般指小地方;in一般指大地方或某個范圍之內(nèi);on往往表示“在某個物體的表面”。例如：
He arrived in Shanghai yesterday.
They arrived at a small village before dark.
There is a big hole in the wall.
The teacher put up a picture on the wall.
over, above, on
over, on和above都可表示“在……上面”，但具體含義不同。Over表示位置高于某物，在某物的正上方，其反義詞是under。 above也表示位置高于某物，但不一定在正上方，其反義詞是below。On指兩個物體表面接觸，一個在另一的上面。例如：
There is a bridge over the river.
We flew above the clouds.
They put some flowers on the teacher’s desk.
across, through
across和through均可表示“從這一邊到另一邊”，但用法不同。Across的含義與on有關(guān)，表示動作在某一物體的表面進行。Throgh的含義與in有關(guān)，表示動作是在三維空間進行。例如：
The dog ran across the grass.
The boy swam across the river.
They walked through the forest.
I pushed through the crowds.
in front of, in the front of
in front of 表示“在某人或某物的前面”，在某個范圍以外;in the front of 表示“在……的前部”，在某個范圍以內(nèi)。例如：
There are some tall trees in front of the building.
The teacher is sitting in the front of the classroom.
3.介詞的固定搭配
介詞往往同其他詞類形成了固定搭配關(guān)系。記住這種固定搭配關(guān)系，才能正確使用介詞。
(1)介詞與動詞的搭配
listen to , laugh at, get to, look for wait for, hear from, turn on, turn off, worry about, think of, look after, spend…on…， 等。
(2)介詞與名詞的搭配
on time, in time, by bus, on foot, with pleasure, on one’s way to, in trouble, at breakfast, at the end of, in the end等。
(3)介詞與形容詞的搭配
be late for, be afraid of, be good at, be interested in, be angry with, be full of, be sorry for等。
二、動詞篇：
1.短語動詞的分類
(1)動詞+介詞
常見的有l(wèi)ook for, look after, ask for, laugh at, hear of 等。這類短語動詞的賓語只能放在介詞后。如：
Don’t laugh at others.
Tom asked his parents for a bike.
(2)動詞+副詞
常見的有g(shù)ive up, pick up, think over, find out, hand in,等。這類短語動詞的賓語如果是名詞，既可放在副詞前邊，又可放在副詞后邊;賓語如果是人稱代詞或反身代詞，則要放在副詞前邊。如：
You’ll hand in your homework tomorrow.
Please don’t forget to hand it in.
(3)動詞+副詞+介詞
常見的有 go on with, catch up with等。這類短語動詞的賓語只能放在介詞后邊。如：
Go on and I’ll catch up with you in five minutes.
After a short rest, he went on with his research work.
(4)動詞+名詞+介詞
常見的有take care of, make use of, pay attention to, make fun of 等。這類短語動詞的賓語只能放在介詞后邊。如：
You should pay attention to your handwriting.
We should make full use of our time.
(5)動詞+形容詞
常見的有l(wèi)eave open, set free, cut open等。這類短語動詞的賓語如果是名詞，則賓語可放在形容詞的前邊，也可放在后邊;賓語如果是人稱代詞或反身代詞，則必須放在形容詞前邊。如：
The prisoners were set free.
He cut it open.
(6)動詞+名詞
常見的有take place, make friends等。這類短語動詞用作不及物動詞。如：
This story took place three years ago.
I make friends with a lot of people.
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