高中英语人教版必修3>Unit 2 Healthy eating Period Three　Grammar & Writing 课件

课件37张PPT。Unit 2　Healthy eating语法专题内容索引写作专题Period Three　Grammar & Writing语法专题用适当的情态动词填空
1.You keep a simple first aid box at home for any accidents.
2.There being no bus that night，we go home on foot.
3.—Mr Wang，I will go and fetch four chairs for the meeting.
—You fetch four；two will do.
4.—I’m sorry.I have shouted at you the other day.
—Forget it.I was a bit out of control myself.
5.You have told me the news.I have already known it.情态动词(Ⅱ)ought to/shouldhad toneedn’t/don’t have tooughtn’t to needn’t 1.ought to的用法
(1)表示责任和义务，意为“应该”，与should同义。
You ought to be more careful when you do some shopping on the Internet.
在网上购物时，你应该更小心些。ought to的否定形式为ought not to/oughtn’t to，一般疑问形式是将ought提至句首，其否定答语通常用don’t have to或needn’t。
You ought not to make this kind of mistake again.
你不应该再犯这种错误了。
—Ought he to see the doctor?
—Yes，he ought (to)./No，he doesn’t have to/needn’t.
——他该去看医生吗？
——是的，他该去。/不，他不必去。考点警示(2)表示可能性，一般指较大的可能性，意为“按道理应该”。
If he started at six，he ought to be here now.
要是他六点就出发的话，这会儿该到这里了。2.have to的用法
have to意为“不得不”，有时态、人称和数的变化，其否定形式和疑问形式需要借助于助动词do。
It was raining outside；we had to stay at home.
下雨了，我们不得不待在家里。have to & must
(1)两者都可意为“必须，应该”，但 have to 表示客观的需要，而 must 表示说话人主观上的看法，即主观上的必要。
(2)have to有人称、数和时态的变化，而 must 只有一种形式。
He had to look after his sister yesterday.
昨天他必须照顾他的妹妹。
My sister is ill；my mother has to look after her.
我妹妹生病了，妈妈不得不照顾她。
We must help each other.
我们必须互相帮助。考点警示(3)在否定结构中，don’t have to 表示“不必”；mustn’t 表示“禁止，不许”。
You don’t have to tell him about it.
你不必把此事告诉他。
(4)在回答 must 的一般疑问句时，肯定式常用 must，表示“必须”，否定式常用 need not/needn’t或 don’t have to，表示“不必”。 3.need的用法
(1)need既可以作实义动词，也可以作情态动词。作情态动词时，后跟动词原形，表示“需要，有必要”，无人称和数的变化，多用于否定句、疑问句或条件句中。
You needn’t go there now.你现在不必去那儿。
Need I go there now？我现在需要去那儿吗？由need引导的一般疑问句的肯定回答常用must或have to；否定回答常用needn’t。
—Need I hand in my paper now?
—Yes，you must/have to./No，you needn’t.
——我现在需要交上论文吗？
——是的，你必须。/不，你不需要。考点警示(2)作为实义动词，同其他实义动词一样，可用于各种句式，有时态、人称、数的变化，构成否定句和疑问句时要借助于助动词do。
You need to be careful.
你得小心些。
You don’t need to be so worried.
你不必如此担心。当need作实义动词“需要”讲时，其后跟不定式的被动形式相当于跟
v.-ing的主动形式，在这一点上，与want和require作“需要”讲时一样。
The house needs/wants/requires repairing/to be repaired.
这所房子需要修葺。考点警示4.dare的用法
(1)dare既可以作实义动词，也可以作情态动词。作情态动词时多用于疑问句、否定句、条件状语从句以及表示怀疑的名词性从句中，表示“敢……”。
I dare not walk through the wood at night.
夜间我不敢在小树林里走。
(2)dare作实义动词时，在否定句中不定式符号to也可以省略。
The children don’t dare (to) make a sound while their parents are sleeping.
孩子们在父母睡觉时不敢弄出一点声音。5.情态动词＋have done结构的用法
(1)must have done表示对过去发生的事情所作出的合理或很有把握的推测，“想必/准是/一定……”，只用于肯定句中，在否定句或疑问句中通常被can/can’t＋have done代替。
From what you said，she must have told you all about it.
从你所说的来看，她一定把一切都告诉你了。(2)can have done一般用于疑问句和否定句中，用于表示对过去所发生事情的推测。could have done用于肯定句时，表示“可能已经做过某事”或“本有能力做某事而未做”。
Mr Smith can’t have gone to Beijing，for I saw him in the library just now.
史密斯先生不可能去北京了，我刚才还在图书馆看见他了。(3)should/ought to have done表示“过去本应该做某事而(实际上)没有做”，含有责备或遗憾的语气；其否定形式表示“某种行为不该发生却发生了”。
You should have done more exercise before.
以前你应该多进行锻炼的。
(4)need have done表示“本需要做而实际未做”；needn’t have done表示“本不必做某事而实际做了”。
As it turned out to be a small house party，we needn’t have dressed up so formally.
最后证实那是一个小型的家庭聚会，我们本来没必要盛装打扮的。(5)may/might have done表示对过去发生的事情的推测，意思是“也许已经做了某事，可能已经做了某事”，多用在肯定句中，用might时表示语气更加不肯定。
You might have read about it in the papers.
你可能已经在报上看过这个消息了。完成句子
(1)你不该责备他。
You him.
(2)他没有钱，只好放弃这个计划。
He has no money，so he give up this plan.
(3)你千万不能告诉他这个秘密。
You him the secret.题组训练oughtn’t/ought not to scoldhas tomustn’t tell (4)这里相当暖和，我们还没有必要打开暖气。
It’s quite warm here；we the heating on yet.
(5)你怎么敢那样说？
How you that?
(6)她不敢在晚上出去。
She at night.
(7)我玩得再开心不过了——这是完美的一天。
I myself more—it was a perfect day.needn’t turndaresaydared not go outcouldn’t have enjoyed(8)他们本应该在午饭时间就到达的，但是他们的航班被耽搁了。
They at lunchtime but their flight was delayed.
(9)马克本来不必那么匆忙的。这么高速驾驶之后，他早半个小时到达了。
Mark .After driving at top speed，he arrived half an hour early.
(10)他看上去很高兴，一定是通过了考试。
He looks so happy，so he .should have arrivedneedn’t have hurriedmust have passed the test用适当的情态动词或所给动词的正确形式填空
1.George (go) too far.His coffee is still warm.(2016·浙江)
2.I have worried before I came to the new school，for my classmates here are very friendly to me.(2015·天津)
3.—Sorry，Mum! I failed the job interview again.
—Oh，it’s too bad.You have made full preparations.
(2015·福建)can’t have goneneedn’tshould4.My book，The House of Hades，is missing.Who have taken it？
(2014·陕西)
5.Since nobody gave him any help，he have done the research on his own.(2013·新课标全国Ⅱ)couldmust写作专题广告是说明文的一种，是为了某一特定的需要，通过一定形式向公众传递信息的手段。
广告的结构：标题、正文和落款。标题通常醒目，引起公众的兴趣；正文要简洁明了；落款表明广告的主题人的联系方式。Persuasive writing:an advertisement1.This kind of computer is of good quality.
2.All the common families can afford to buy one.It controls mostly by itself，so it is very easy to operate.
3.It is convenient to carry，for it is small and light.
4.Once you have one of this kind，you’ll enjoy it very much.
5.There are many kinds of food served in the restaurant，which are very delicious.
6.At the same time，all the foods look nice and smell good.7.What’s more，the prices of them are very reasonable.
8.The owner as well as the waiters is very friendly and kind，and they will make you feel at home.假设你叫李华，现在为新开业的宏昌餐馆写一则80词左右的广告。包括下面的内容：
1.宏昌餐馆提供均衡饮食，利于减肥瘦身；
2.提供既有能量又有纤维的饭菜；
3.有快餐和特殊的蔬菜菜肴；
4.在这里就餐是一种乐趣；
5.保证最好的服务；
6.餐厅设在湖边，风景优美；
7.欢迎光顾。Step One　审题谋篇
写作要求是写一个饭馆的广告。写作时应注意下面几点：
1.确定文体：这是一则广告。写作时注意广告的写作特点。
2.主体时态：文章应以一般现在时和一般将来时为主。
3.主体人称：由于是对一个饭馆进行宣传，所以人称应该以第三人称为主。写作步骤Step Two　联想词汇
1.变苗条
2.减肥
3.平衡膳食
4.多种多样的
5.充满了become slimlose weightbalanced dieta variety ofbe filled with...Step Three　句式升级
1.想变苗条吗？那么来宏昌饭店吧。
，you can come to Hongchang Restaurant.(复合句)
？Then you can come to Hongchang Restaurant.(并列句)If you want to become slimDo you want to become slim2.宏昌饭店是均衡饮食之家，提供很多美味健康的食物。
Hongchang Restaurant is the home of balanced foods ___________ _____________________________.(and并列句)
Hongchang Restaurant is the home of balanced foods，___________
_____________________________.(定语从句)and it offers many delicious and healthy foodswhich offersmany delicious and healthy foods3.我们饭店给你充满能量和纤维的均衡饮食。
Give you a balanced diet in
our restaurant.(定语从句)
Give you a balanced diet in our restaurant.(形容词短语作后置定语)which is full of enough energy as well as fibrefull of enough energy as well as fibreStep Four　连句成篇Once Tasted，Never Forgotten
Do you want to become slim？Then you can come to Hongchang Restaurant.
Don’t you like to lose weight？Don’t you enjoy proper dinners?
Hongchang Restaurant is the home of balanced foods，which offers many delicious and healthy foods.
Give you a balanced diet full of enough energy as well as fibre in our restaurant.
Provide fast food and special dishes from vegetables.It is fun to eat here. You will enjoy the exciting atmosphere.
You’ll enjoy the best service.
Our restaurant lies by the lakeside with great views.
Why not pay us a visit?
You are welcome!
Telephone number：533599本课结束