《学霸笔记 同步精讲》Unit 11 Section Ⅳ Grammar(课件)高中英语北师大版选择性必修4

资源下载
  1. 二一教育资源

《学霸笔记 同步精讲》Unit 11 Section Ⅳ Grammar(课件)高中英语北师大版选择性必修4

资源简介

(共23张PPT)
Unit 11
Conflict and Compromise
Section Ⅳ Grammar
英 语
2026
内容索引
走近新课 一起感知
语法探究 一起思考
随堂练习
走近新课 一起感知
语法感知
写出下列句子中情态动词的汉语意思
1.You ought to have a talk with your son. ___________
2.I could dress myself when I was four years old. ___________
3.They couldn’t relax or read a book without plugging their ears. ______
4.May I take this seat ___________
5.You have to go to see a doctor at once. ___________
应该
能够 
不能 
可以
必须
语法探究 一起思考
知识脉络
语法精讲
情 态 动 词
情态动词和动词原形连用,表示可能性、能力、许可或责任等。
一、ought to
1.表示责任 I really ought to phone my mother.我确实应该给妈妈打个电话。
2.表示必要性
You ought to go over all the lessons,for the exam is coming.
你应该把所有功课复习一遍,因为要考试了。
3.表示建议 You ought to write to her to explain it.你应该给她写信解释一下。
4.表示推测 Tom ought to be home now.汤姆现在该到家了。
5.表示过去该做而未做
You ought to have stayed at home yesterday.昨天你本该待在家里的。
【即学即用】
翻译句子
①你应该在早上散步。
______________________________________________
②你本该写信给你妈妈的。
______________________________________________
You ought to do some walking in the morning.
You ought to have written to your mother.
二、could
1.表示能力(can的过去式)
She could speak English when she was very young.
她很小的时候就会说英语了。
2.表示婉转地提出请求
Could I see your new computer 我可以看看你的新电脑吗
3.表示建议
We could arrive at that village first and then go to that famous temple.
我们可以先到那个村子,然后去那个著名的庙宇。
4.表示可能性
The weather in Shanghai could be very cold in winter.上海的冬天可能会很冷。
If we win the game,we could get that chance.如果我们赢了那场比赛,我们就可以得到那个机会。
【即学即用】
翻译句子
①他在上大学时就会说四种外语了。
______________________________________________
②我可以去你家和你谈谈作文的事情吗
__________________________________________________
③你可以现在就让医生给你做个检查。
______________________________________________
④天那样黑,我们什么也看不见。
______________________________________________
He could speak four foreign languages while at college.
Could I go to your home to talk to you about the composition
You could ask your doctor to examine your body now.
It was so dark that we could see nothing.
三、dare
dare既可用作情态动词,也可用作实义动词。
I daren’t risk offending his parents.
我不敢冒险触怒他的父母。
I hardly dare to go into the room without getting permission.
未经同意,我几乎不敢走进那个房间。
【即学即用】
翻译句子
①She said it as loudly as she dared.
______________________________________________
②They daren’t ask for any more money.
______________________________________________
她壮着胆子大声说了出来。
他们不敢再要更多钱了。
四、have to
1.表示(他人期望我们履行的)责任、义务
You have to do your homework carefully after school.
放学后你必须认真做作业。
2.表示客观上的必要性
Mother is out,so I have to look after the shop.
妈妈不在家,因此我不得不照看商店。
3.表示建议
You have to make a plan first.
你必须先制订一个计划。
注意 have to与must的用法
have to着重强调客观需要,能用于现在时、 过去时或将来时。而must表示“必须,应该”时,强调主观看法,只用于现在时,否定式是must not/mustn’t。must引导的问句,其否定回答要用needn’t或don’t have to。
I have to prepare for the chemistry test this week.
这个星期我得准备化学考试。
We must find a good method to learn the computer well.
我们必须找一个学好电脑的好方法。
【即学即用】
翻译句子
①你不必每天使用手机
______________________________________________
②因为疾病,他不得不放弃了这次比赛。
______________________________________________
You don’t have to use the cell phone every day.
He had to give up this game because of his illness.
五、may、might、can、could表示可能性
1.在肯定句中,may、might、could用于表示某事可能发生或可能存在,但can没有此用法。might表示可能性很小。
The rude person might be angry at it.
那个粗鲁的人或许会为此生气。
I may be late,so don’t wait for me.
我可能晚些到,所以不要等我。
2.can 表示更宽泛的某事发生的可能性。
Anybody can make mistakes.
任何人都可能犯错误。
3.在否定句中,用cannot或者couldn’t表示“不可能”。
This can’t be done by him.
这不可能是他做的。
4.can用于问句表示可能性。
Can this news be true 这则消息可能是真的吗
5.在肯定句中,may/might/could+have done用于表示过去某事可能发生了。
She looks so sad.She may have known the truth.
她看上去非常难过,她或许知道真相了。
I thought he hated me,but I may/might/could have been wrong.
我原以为他恨我,但是我可能错了。
6.might/could + have done用于表示某事本可以发生,但事实上并没有发生。may和can不能用于此种情况。
If you were more careful,you might/could have got that chance.
如果你更仔细些,你或许就得到那个机会了。
【即学即用】
翻译句子
①I’m not sure,but he may have got married last year.
______________________________________________
②I’m afraid it might rain tonight.
______________________________________________
③It couldn’t be his bike.He came here by bus this morning.
______________________________________________
我不太确定,但他可能去年就结婚了。
今晚恐怕要下雨。
那不可能是他的自行车。他今天早上乘公共汽车来的
随堂练习
一、选词填空(could/ought to/have to/dare/might)
1.He       be pretty naughty when he was a child.
答案:could
2.I think that the man       finish mending my shoes tomorrow.
答案:ought to
3.My leg was injured,so I       abandon the plan.
答案:had to
4.How       you speak to me like that!
答案:dare
5.The light in the office isn’t on.He       have gone home.
答案:might
二、完成句子
1.你本可以说服他的,可是你太没有耐心了。
You               ,but you were too impatient.
答案:could have persuaded him
2.他或许已经知道了那个坏消息,因为他看上去非常生气。
He                     ,for he looks so angry.
答案:might have known the bad news
3.实际上,我不敢回家告诉妈妈我没及格。
In fact,I              and tell my mother that I had failed.
答案:didn’t dare to go home
4.请你抽些时间帮我学英语好吗
              to help me with my English,please
答案:Could you spare some time
5.大家都已经看了那部电影,所以我只好自己去了。
Everyone had seen that film,so I             by myself.
答案:had to go to see it

展开更多......

收起↑

资源预览