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抖音里的初中语文,英语,数学基础知识大全有用吗?
你相信抖音的话还不如去在书店买一本书,不管是什么知识,你学下去就肯定有用。好的书可以让你的学的更快。
初中英语基础知识点集
初中英语基础知识点集 篇1
1、 时间状语从句
(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。例如:
It was raining hard when got to school yesterday.
While he was doing his homework, the telephone rang.
As he walked along the lake, he sang happily.
He had learned a little Chinese before he came to China.
After he finished middle school, he went to work in a factory.
(2)在时间状语从句里,通常不用将来时态,用现在时态表示将来的动作或状态。例如:
I’ll ring you up as soon as I get to New York.
I will tell him everything when he comes back.
He won’t believe it until he sees it with his own eyes.
(3)在带有till或until引导的时间状语从句的主从复合句里,如果主句用肯定式,其含义是“一直到……时”,谓语动词只能用延续性动词。如果主句用否定式,其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。例如:
The young man read till the light went out.
Let’s wait until the rain stops.
We won’t start until Bob comes.
Don’t get off until the bus stops.
2 、条件状语从句
(1)条件状语从句通常由if, unless引导。例如:
What shall we do if it snows tomorrow?
Don’t leave the building unless I tell you to.
(2)在条件状语从句里,谓语动词通常用现在时态表示将来的动作或状态。例如:
I’ll help you with your English if am free tomorrow.
He won’t be late unless he is ill.
(3)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。例如:
Hurry up, or you’ll be late.
=If you don’t hurry up, you’ll be late.
Study hard and you will pass the exam.
=If you study hard, you will pass the exam.
初中英语基础知识点集 篇2
一、come 短语
1. come across (偶然)遇见(或发现)
2. come along (意外地)出现;发生;来到
3. come from 来自
4. come into 进入
5. come in 进来
6. come out 出版;发表
7. come on 快点儿
8. come over 顺便来访
9. come true (希望等)实现
10. come up with 提出;想出(主意、回答等)
二、get 短语
1. get away 逃离;走开
2. get back 返回;回来;回家
3. get close(to) 接近
4. get down 降下
5. get down to 开始认真(做某事)
6. get in 进入;收获;达到
7. get off 下车
8. get on 上车
9. get through 通过;拨通(电话)
10. get gogether 聚会;联欢
11. get up 起床
三、give 短语
1. give up 放弃
2. give in 屈服;让步
3. give away 赠送;分发
4. give out 分发;发放
5. give back 还给;归还;恢复(健康等)
6. give birth to 生;产生
7. give…a lift 捎(某人)一程
初中英语基础知识点集 篇3
一、 动词不定式不带to的动词
五看(notice,observe,see,look at,watch),
三使役(have,let,make),
二听(hear,listen to),
一感觉(feel)。
按:在上述动词后做宾语补语用的不定式不带to。
二、非谓语动词
动词不做谓语用,
不定、分词与动名。
to 加原形不定式,
词组可做名、副、形。
分词现在和过去,
相当副词和形容。
原形加上“ing”,
动词具有名词性。
三、基数词变序数词(之一)
基变序,有规律,
词尾字母 tdd 。①
八减 t,九减 e,
f 要把 ve 替。②
ty 把 y 变成 i ,
记住th前有个e。③
① 指first、second、third。
② 指eight去掉t,nine去掉e,five和twelve去掉ve加上f。
③ 指twenty→twentieth等。
四、基数词变序数词(之二)
第一、二、三要全变,①
其余“th”加后边,②
“th”里有例外,
你需格外记明白:
八减 t,九减 e,③
字母 f 代ve,④
ty 变 tie。⑤
① one-first,two-second,three-third。
② four-fourth,seven-seventh,hundred-hundredth。。
③ eight-eighth ,nine-ninth。
④ five-fifth,twelve-twelfth。
⑤ twenty-twentieth,sixty-sixtieth。
初中英语基础知识点集 篇4
介词在英文中是一种虚词。介词不能单独使用,一般也无句子重音。常常放在名词或代词之前,与之一起构成介词短语,共同充当句子成分。很多介词从词义上往往看不出是介词。如:against的意思是“反对”,在汉语里是动词,在英语里却是介词。
(一)表示时间的介词:
1.at,in,on
(1)at表示“在某一时刻、某一时点”
(2)in表示“在某月、季节、年、世纪”以及泛指的上、下午、晚上。
in September in winter in 1999 in the 20th century
in the morning/afternoon/evening
(3)on表示“在具体某一天或某天的上、下午”。泛指上、下午、晚上、夜间时用in the morning/afternoon/evening,at night;但若指具体某一天的上述时段时,则一律用on。
on Monday on April 1st
On the afternoon of May 23.
2.from,since,for
(1)from表示“等时间的起点”。
You can come anytime from Monday to Friday.周一至周五你什幺时间来都行。
The exam will start from 9:00am.考试将从上午九点开始。
(2)since表示“自从……以来(直到现在)”
He has been away from home since 1973.他自从1973年就离开了家乡。
We have known each other since ten years ago.我们十年前就认识了。
(3)for与since表示一段时间,但for与时间段连用,而since与时间点连用。
for two hours since last week
3.after,in,within
(1)after表示“在……之后”,是before的反义词。
We’ll hold a party after dinner.晚餐后我们将举办晚会。
He got a cancer and died after a year.他患了癌症,一年后去世了
(2)within“在……时间之内”
I can finish it within an hour.我不需一小时就可把它做完。
(3)in后面接过去的时间点表过去,若后面接一段时间,则表示“在……时间之后”
I was born in 1983.我出生于1983年。
My father will come back in three days.我爸爸将会在3天后回来。
(二)表示“地点、方向”的`介词:
1.In,outside between,among
(1)in表示“在……里面”,如:
What’s in the box?盒子里是什么?
She put her book in the desk.她把书放进了书桌。
(2)outside指“在……外面”
There are many people outside the room.房间外有很多人。
What did your see outside the hall?你在大厅外看见了什么?
(3)between在……之间(指二者)
There is a hospital between the hotel and the post office.在宾馆与邮局之间有所医院。
The building stands between the park and the small river.那栋建筑位于公园和小河之间。
④among在……之间(指三者以上)
“There is a thief among you.”The policeman shouted to the crowd.警察向人群喊道:“你们中间有个小偷!
He found his place among the crowd.他在人群中找到了他的位置。
2.on,above,over,below,under
(1)on在……上面,表面相互接触。
There is an apple on the table.桌上有一个苹果。
On the top of the hill,there is a flag.山顶有一面旗子。
(2)above只表示“在……上方或位置高出……”,与below相对。
A plane flew above our heads.一架飞机从我们头上飞过。
The Turners live above us.特纳一家人住在我们的上面。
(3)over“在……正上方”,与under相对。
There is a bridge over the river.河上有一座桥。
The picture is hanging over the blackboard.那张图挂在黑板的正上方。
(4)below在……下方,低于……
There are many flowers below the window.窗下有很多花。
Her skirt reaches just below her knees.她的裙子刚到膝盖下。
(5)under在……正下方
They sat under a big tree,drinking.他们坐在一棵大树下喝酒。
What are you wearing under your coat?你外套里面穿了什么?
3.near,by,beside
(1)near在……附近,与far相对
A hospital was built near the railway station.在火车站附近建了一所医院。
My home is near he school.我的家离学校很近。
(2)by=beside,靠近,在……旁边,比near距离更近
He just sat by/beside me in the cinema.在电影院他就坐在我旁边。
He lay down beside the statuary.他在雕像旁躺下了。
4.in front of,in the front of,behind,around
(1)in front of在……前面,in the front of表示“在……前部”,指里面。
A river flows in front of the house.房子前有一条河
They put a bunch of flowers in front of the door.他们在门前放了一束花。
There is a red chair in the front of the room.
在房间前半部有把红椅子。
(2)behind在……后面588.es
A high building stands behind the village.村子后面有一高层建筑。
The cat lies behind the door.猫躺在门后面。
(3)around在……周围,围绕
There are many trees around the village.村子周围有很多树围绕。
There are flowers around the stage.舞台周围摆着鲜花。
5.along,across,through
(1)along沿着
He likes to drive along the river.他喜欢沿着河开车。
There are all kinds of beautiful flowers along the road street.沿街有着各种美丽的花。
(2)across横穿
The little girl is afraid to go across the street.这个小女孩不敢横穿马路。
It’s dangerous to run across the busy road.跑着穿越繁忙的马路是很危险的。
(3)through穿过
It took us ten minutes to drive through the tunnel.开车穿过这条隧道花了我们10分钟时间。
He pushed his way through the crowd to the platform.他从人群里挤到了站台。
6.at,in
二者都表示“在某个地方”,但at多指较小的地方,如车站、家等,而in多指在“大地方”,如城市、国家、大洲等。(但大小有时也是相对的)。
He lives at No.27 Zhongshan street in Nanjing.他住在南京市中山路27号。
The plane will arrive in Beijing at 13:00.飞机将于13点到达北京。
三、其它用途的介词:
1.表示“标准或单位”的介词:at,for,by
(1)at表示“以……速度”“以……价格”
He drove at a speed of 80 miles an hour.他以每小时8英里的速度行驶。
I sold my car at a high price.我以高价出售了我的汽车。
2.表示“材料”的介词:of,from
(1)of表示从成品仍可看出原料。
This box is made of paper.这个盒子是纸做的。
This salad is made of apples and strwberres.这种沙拉是由苹果和草莓做的。
(2)from表示从成品已看不出原料。
Bread is made from wheat.面包是小麦做的。
The lifeboat is made from some special material.这个救生艇是由某种特殊材料制成的。
3.表示“工具或手段”的介词:by,with,on
(1)by凭借“工具或手段(多用于交通工具)如:
by bus乘公共汽车,by plane乘飞机
He usually goes to work by bike.他通常骑车去上班。
He sent the news to me by e-mail.他通过电子邮件发给了我这一消息。
(2)with用……工具
He broke the window with a stone.他用石头把玻璃打碎了。
He stopped the ball with his right foot.他用右脚把球停住。
(3)on以……方式。多用于固定词组。
They talked on the telephone.他们通过电话进行交谈。
She learns English on the radio/on TV.她通过收音机/电视学英语。
4.besides,except都表示“除了”。besides的用法就等于as well as。
He is interested in tennis besides(as well as)football.
除了足球,他还对网球感兴趣。
(1)besides是包括后面所提人或物在内的“除了”,可以理解为“除之外…还、除之外…又”,表示两部分的相似性。
Twenty-five students went to the cinema besides him.
除他以外,还有25个学生去看了电影。(他和另外25人都去了)
We like biology besides English.
除了英语外,我们还喜欢生物。(生物和英语都喜欢)
(2)except是指不包括后面所提人或物在内的“除了”,可以理解为“撇开…不谈”,表示两部分的不同。
Everyone is excited except me.
除我以外的每个人都很激动。(他们激动,而我却不激动)
All the visitors are Japanese except him.
除他以外的所有游客都是日本人。(其他人是日本人,可他不是)
今天的内容就介绍这里了。
初中生语数英物四科各有那些刷题资料好用?
对于初中生来说,思维模式就不能像小学那样,事事都要老师来监督。初中生还没有进行会考时,学习的科目较多这就需要根据自身情况课后自己下功夫去学。
刷题资料的话,语文我建议就是分板块去买,《五年中考三年模拟》就很不错,但其实更重要的是做过的试卷,老师讲解过的你记的笔记这些都很重要。
数学、物理的话,建议《一本涂书》,它里面有很多的公式,讲解也很全,很详细。
英语的话,也建议分板块,星火英语就很棒,可以根据自身去购买相应的板块来刷题。