《Could you please clean your room?》PPT课件5
导课练习：请观察一下句子，分析情态动词的意义
1.Can I use your pen?----Yes , you can./No, you can’t .
2.May I come in , please ? ----Yes , you can./No, you can’t .
3.Could I go out for dinner with my friends ?---Yes , you can./No , you can’t.
情态动词：Can, May , Could 的用法
1.共同点：三者均可表示请求，允许。意思为：”………………可以吗？”
2.不同点： CAN表示请求或允许，多用于口语中，意为“可以、能”等。
如：Can I help you ?
May表示“许可、准许、请求许可”，此时与 can 同义，可以互换使用
如：May I use your ruler ?
Sure ,/Certianly . /Yes , please.
No, you mustn’t /No , you can’t .
注意：否定回答不能说成No, you may not .
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Could 的其他几种用法：
1.Could 作为can的过去式，表示过去的能力。
2.表示惊讶，怀疑，不相信等态度，主要用于否定句或者疑问句，此时could 与can无时间上的区别，但语气比can缓和，情绪要弱。
3.表示可能性，只对将来，现在后者过去某种可能的推测
4，用于虚拟语气。
Work on 与work out
Work on正在使用…从事于…
I’m going to work on it now .
Work out 算出，制定出
He work on the maths problem last night,but didn’t work it out.
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3b Read the sentences.Underlinethe sentences from the reading the the same thing.
1 Neither of us did any housework for a week.
=For one week,she didn’t do any housework and neither did I.
2 My mom came over as soon as I sat down in front of the TV.
=The minute I sat down in front of the TV,my mom came over.
3 You ‘re tired ,but I’m tired ,too.
= I’m just as tired as you are.
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比较下列词组
1. To one’s surprise让某人惊讶的是
To Mr Li’s surprise,his students found the key on time.
2. Be surprised 感到惊讶
I was surprised when I heard the surprising news.
3. In surprise 惊讶地
He looked at me in surprise.
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2a Discuss the questions with your partner.
1. What do you often do to help your parents at home?
2. Do you think kids should help out with chores at home?
2b The Sunday Mail magazine invited parents to write about whether they think young people should do chores at home. Skim the following letters. Which one agrees and which one disagrees?
Answer the questions.
1. What is Ms. Miller’s opinion?
She thinks doing chores is parents’job.
2. What is Mr. Smith’s opinion?
He thinks it’s important for children to do chores and help their parents with housework.
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Read the letters again and finish the following tasks.
I. 完成句子，每空词数不限。
1. Ms. Miller thinks children should spend their time on schoolwork in order to____________________.
2. Mr. Smith thinks these days children depend on _______________________.
II. 判断正(T)误(F)。
( )3. Ms. Miller thinks doing chores is not difficult.
( )4. Mr. Smith’s neighbors’son looked after himself well during his first year in the college.
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1. It is the parents’ job to provide a clean and comfortable environment at home for their children.
此处代词it仅为形式上的主语, 真正的主语是to provide … for their children。我们也可将It is one’s job (duty, …) to do something.视为一个固定的句型, 表示“做某事是某人的工作(职责等)”。如:
2. And anyway, I think doing chores is not so difficult.
反正我觉得干点家务也不难。
anyway是一个副词, 若位于句首, 其后往往会有逗号将其与句子的其他内容隔开。anyway在此句中的作用是追加评论, 相当于汉语的“反正; 仍然; 依然”。如:
3. ill & sick
◆相同点
ill 与sick 都可以表示“生病的”，都可作表语。如：
Alice was ill / sick yesterday.
◆不同点
表示“生病”时，sick 可作定语，但ill 通常不作定语。如：
Could you help the sick girl?
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