英语语法
2024-02-17 09:54:49 0 举报
AI智能生成
初中英语语法
作者其他创作
大纲/内容
概念:表达自己感情态度的动词
谓语:情态动词+实义动词/系动词原型
不能单独充当谓语
我们必须好好学习We must study hard.
他必须好好学习He must study hard.
有人称和数的变化
We have to study hard.
He has to study hard.
例外:have to 不得不,强迫意味强
情态动词往往没有人称和数的变化
Jack can play the piano.
I could swin when I was seven years old.
1. 表能力: 能,会
It's can't your book
那不可能是你的书
2. 表推测:常用于否定句中,表示不可能can't
Can I have a try?
我能试试吗?
3. 表请求/允许:常用于口语中,翻译为‘可以’
他明天可能会来。He may come tomorrow.
1. 表推测:用于肯定句中,可能/也许
我能借一下你的书吗?May I borrow your book?
2. 表请求/许可:常用于疑问句中,翻译为‘可以’
May I go now?
祝你成功May you succeed
3. 表祝愿
may
你今晚必须完成你的作业You must finish your homework tonight.
1. 必须,应该
那一定是MaryIt must be Mary
2. 表推测:“一定,肯定”,长用于肯定句中
这里禁止停车You mustn't park here.
我需要今晚写完作业吗?Must I finish my homework tonight?
正因为must't翻译为禁止。所以must的否定回答一般用needn't或don't have to
3. 必须不/禁止 must't
must
常用用否定句/疑问句
我需要现在交作业吗?Need I hand in my homework now?
+动词原型 need do sth
情态动词
我需要写作业了I need to do my homework
need to do th 需要做...
这个机器需要被修理This machine need to be repairedThis machine need repairing
被动形式,需要被做 need doing = need to be done
实义动词
need
你不必这么早来学校You needn't come to school so early
我们应该保护环境We should protect the environment
应该
should
wil do sth
She will go to park tomorrow.
将要,用于一般将来时
will
Would you like to do sth
will的过去时
would
表能力,用法相近
一般现在时He can't speak english
一般过去时Jim could speak english at five years old
一般将来时We'll be able to see him next week
现在完成时He has be able to drive
can只有原型can和过去式could,其他时态用be able to
1. can 和 be able to
可以互换使用
Can I help you?/May I help you?
can和may均可用来征求意见,翻译为“可以”
She may be in the classroom.
在肯定句用might,may,must不用can
Where can they be now?他们现在可能在哪儿?
在疑问句中表示推测用can,不用might,may,must
can和may表示可能性时的区别
They can't be true.那不可能是真的
在否定句中,用can't表示不可能
2. can 和 may
may为情态动词,be为动词原型,在句中作谓语
may be
副词,大概,也许。相当于perhaps。在句首,作状语
maybe
子主题
3. may be和maybe
I can't speek english
不会
We can't do now because it's too dark
不能
The man can't be our teacher because he is too yang.
否定句中表示推测,不可能
can't
You must't play football in the street because too dangerous.
表示禁止,语气强烈
must't
4. can't和must't
I know I must study hard
must 强调个人意志和主观上的必要
have to客观上的必要
5. must和have to
不仅表过去,也表更加委婉的语气
Would you please open the door?
Could you please close the window
6. Would Should Could Might
She used to swin in the river.
used to do/过去常常做
He was used to eating in the restaurant.
be used to doing/习惯做
A knife can be used to cut thinks
be used to do/被使用去做
used to do/be used to doing/be used to do
易混点
动作的发出者 + 动词 + 动作的接收者
主动语态:动作的发出者做主语
动作的接收者 + 动词被动形式 + 动作的发出者
主动语态:动作的接收者做主语
be + 动词过去分词
基本结构
被动语态
时态和语态
制约因素:已确定,客观存在
假设条件:不确定,经验推段
假设条件和制约因素分析
英语语法
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