外研版选修6 Module 1 Small Talk Grammar and fun_ction课件(36张ppt)

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名称 外研版选修6 Module 1 Small Talk Grammar and fun_ction课件(36张ppt)
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科目 英语
更新时间 2022-02-11 21:41:18

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(共36张PPT)
1. To learn to talk about obligation or lack of obligation by using must, mustn’t, have to, don’t have to
2. To learn the usages of didn’t need
to do and needn’t have done
Discussion
As a student of Senior Two, what do you think:
1. students have to do at school
2. you must do at school
3. you mustn’t do at school
Talking about obligation or lack of obligation.
obligation: must do…
have to do…
必须做…… 不得不做……
(客观上的需要)
lack of obligation: don’t have to do…
don’t need to do…
没有必要做……
不必要做……
Read the pairs of sentences and answer the questions.
a. You must arrive on time at a party.
You have to arrive on time at a party.
b. You mustn’t take yellow flowers for
the host.
You don’t have to take yellow flowers for the host.
1. Which of the following is true about the first pair of sentences
(a) They both indicate an obligation.
(b) They are only suggestions about
what to do.
(c) The first one is an obligation, the
second one is a suggestion.
c. You don’t have to take a gift.
You don’t need to take a gift.
2. Which of the following is true about the second pair of sentences
(a) They mean the same thing.
(b) The first one is an obligation, the
second one indicates a lack of
obligation.
(c) The first one indicates that
something is against the law.
3. Which of the following is true about the third pair of sentences
(a) They mean the same thing.
(b) The first one is an obligation, the
second one isn’t.
(c) The second one is an obligation, the
first one isn’t.
Look at the two sentences and decide which explanation is correct.
1. We all know each other. We don’t need to worry about small talk. This means ___.
(a) it isn’t necessary to worry about it
(b) unfortunately we worry about it
(a)
2. The party is informal. You needn’t wear a tie. This means ___.
(a) you must not wear a tie
(b) you can wear a tie if you choose
(b)
1. Stop! You ____________________ give yellow flowers to the host! It’s unlucky!
2. Don’t worry. You _____________________ eat anything you don’t like.
mustn’t, can’t
don’t have to, needn’t
Complete the sentences with verbs to express obligation or lack of obligation.
3. I’m sorry. You can’t leave. You ___________________ wait until the prizes have been given.
4. _______________ I ______________ take some food to the party
5. You ________________________ take a gift to the host, but she will be very pleased if you do.
must, have to
Do
have to, need to
don’t have to, don’t need to
后接 __________,通常用于否定句、疑问句或if/whether引导的宾语从句。 need疑问句的肯定回答用 __________, 否定回答用_____________________。
must
needn’t /don’t have to
动词原形
复习need作情态动词基本用法:
1. It was Sunday. He didn’t need to go to
work.
2. The poor girl needn’t have waited in
the rain for so long.
3. That year, he was young and didn’t
need to serve in the army.
4. You needn’t have said so much about
your being late.
5. I didn’t need to get a visa.
6. You needn’t have spoken so slowly.
7. The manager didn’t need to do such
things himself.
8. They needn’t have written the letter to
the headmaster.
9. You didn’t need to tell him the news.
10. We needn’t have spent too much money
on clothes.
1. didn’t need to do
表示那件事不必做而且结果也是那件事
的确没有做;
2. needn’t have done
表示虽然那件事不必做但结果是已经
做了。常含有责备或遗憾之意,译成
“本来不必……”。
Rewrite the sentences using needn’t have done.
You needn’t have tidied the room.
1. It wasn’t necessary for you to bring
some flowers!
You needn’t have brought some flowers.
2. Thank you for tidying the room –
but it wasn’t necessary.
You needn’t have gone to school. It’s
Sunday!
3. There was no need for you to buy
the box of chocolates.
You needn’t have bought the box of
chocolates.
4. Why did you go to school It’s Sunday!
You needn’t have brought the book to show me. I already have it.
5. Thank you for bringing the book to
show me, but I already have it.
Read the sentence and decide which endings are possible.
I didn’t need to buy a gift for my host
family ________.
because I already had done
so I didn’t get one
so I bought one
so I took it back and got a refund
(a) (b) (d)
We brought some food to the party but there was too much, so we ___________________ (bring) any.
2. My friend spoke good Mandarin so I ____________________ (translate) the speech for him.
needn’t have brought
didn’t need to translate
Complete the sentences using didn’t need to do or needn’t have done.
3. The office had already opened when we arrived so we ________________ (wait) outside in the street.
4. I got to the party at 6 p.m., but there was no one there. So I __________________ (arrive) so early.
didn’t need to wait
needn’t have arrived
5. I told the host all about my home town and then he told me he’d been there. I _______________ (tell) him anything.
needn’t have told
Do you know them
can/could have done sth.
can’t/couldn’t have done sth.
must have done sth.
may/might have done sth.
should have done sth.
shouldn’t have done sth.
ought to have done
ought not to have done
可能做了…
不可能做了…
一定做了…
可能做了…
应该做而没有做…
本不该做而做了…
应该做又没有做…
不应该做却做了…
I. 翻译句子。
我丢失的自行车找到了,因此我没必要
再买一辆新的。
My lost bike was found, so I didn’t need
to buy a new one.
2. 天气真好!我根本不必带雨伞!
What a beautiful day! I needn’t have
brought my umbrella after all.
3. 你无需告诉他这一消息,那只会使他
悲伤 。
You didn’t need to tell him the news that
just made him sad.
4. 如果我早知道火车站这么近,我就用不
着打出租车了。
If I had known that the railway station
was so near, I needn’t have taken a taxi.
5. 要下雨了,你没必要浇花。
It was going to rain. You didn’t need
to water the flowers.
6. 昨天你根本没必要去车站。
You needn’t have gone to the station
yesterday.
II. 选用括号内合适的内容填空。
1. Not so long ago, more than 20 species of
fish ________ (could / were able to) be
found in this river.
2. It’s only five minutes’ walk. We
_________________ (needn’t have taken /
couldn’t take) a taxi.
3. You ________ (shall / must) be Mr. Smith.
I was told to pick you up.
4. If your children won’t do as I tell you, you
________ (need / shall) not go to the party.
could
needn’t have taken
must
shall
5. I’m not sure I’ll go swimming. I ________
(might / must) go to the concert instead.
6. A: Obviously, there’s been an accident in
the High Street.
B: That ________ (might / is able to)
explain why the bus is taking so long.
7. A: Lena says she’ll definitely pay the
money back.
B: I wish I ________ (was able to / could)
trust her.
might
might
could
Finish WB exercises 1,2 and 3 on Page
91, 92.