外研版（2019）必修第二册Unit1 Food for thought Period2 Using Language 课件（28张PPT）
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| 名称 | 外研版（2019）必修第二册Unit1 Food for thought Period2 Using Language 课件（28张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 81.7MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-12-03 10:34:23 | ||
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文档简介
(共28张PPT)
To know some modal verbs
To learn how to use modal verbs
To learn how to make comments about food
b
e
d
c
a
have to
dare not
had better
needn’t
be able to
What are modals
In English grammar, a modal, also known as a modal auxiliary or modal verb, is a verb that combines with infinitive without ‘to’ (不带to的不定式) to express possibility, certainty, permission, request, ability , obligation, etc.
a. be able to
Meaning: to indicate ability
Use ‘be able to’ to fill the blanks.
Up till now, he _________________get in touch with her.
You ____________speak perfect English very soon.
I regret ________________help her.
hasn’t been able to
will be able to
not being able to
What’s the difference between ‘be able to’ and ‘can/could’
Examples：
He can swim.
I’m able to express my idea in a clear way.
I could / was able to play the piano when I was young.
They are used to indicate ability.
Examples
He could swim across the river.
Though he was sick, he was able to swim across the river.
We could reach the top of the mountain.
After five hours of climbing, we were able to reach the top of the mountain.
Though he was sick
After five hours of climbing
‘was/were able to’ means that you succeeded in doing sth or managed to do sth in the past.
Benny, the Polish scientist, has spent his lifetime studying active volcanoes and deep caves in all parts of the world. In 1948, he went to a lake in the Congo to observe a new volcano which he later named Kituro. Benny ___________ set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he ___________________ stay near the volcano for very long. He noticed that a river of liquid rock was coming towards him. It threatened to surround him completely, but Benny managed to escape just in time. He waited until the volcano became quiet and he ___________ return two days later. This time, he managed to climb into the mouth of Kituro so that he _________ take photographs and measure temperatures. Benny has often risked his life in this way. He ______________ tell us more about active volcanoes than any man alive.
was able to
couldn’t/wasn’t able to
was able to
could
has been able to
b. dare
Meaning: to be brave enough to do sth
Dare he climb the tree ---No, he dare not.
He dare not go there because it is very dangerous.
He doesn’t dare to cross the river.
He dares to cross the river.
ordinary verb
c. have to
Meaning: to indicate obligations.
‘have to’is a semi-modal verb. It is like a modal verb because it fulfils a specific function, but it behaves like an ordinary verb in its formulation.
It has different forms according to number, person and tense:
I have to; he has to; she had to etc.
c. have to
Meaning: to indicate obligations.
② Think : what’s the negative form of ‘have to’
I don’t have to. She doesn’t have to.
③ It can combine with other modal verbs:
You will have to. He might have to.
d. had better
Meaning: to express suggestions, hopes and warnings
Form: had better do sth
She’d better get here soon, or she’ll miss the opening ceremony.
They had better not be late.
e. need
Meaning: to show that sth is necessary
You needn’t seem him, but I must.
Need I finish the work today
You need to see him.
The bike needs repairing/to be repaired.
ordinary verb
In terms of obligation and advice, what’s the difference between ‘have to’, ‘must’ and ‘should’
Conclusion
Obligation Advice
have to obligations which depend on circumstances situational/external strong advice
must obligations that you feel strongly about personal strong advice
should weak obligations (may come from tradition, customs or culture) correct/right thing to do neutral advice
c
a
d
b
Appearance Smell Taste Feel
shiny, large, round, pink, tiny, fresh
fishy
smoky, spicy, bitter, sweet, fruity
tender, soft, juicy, cold, sticky, smooth, creamy
5. Underline the words that describe food in the activity and put them into the table.
shiny, large, round, pink, tiny, fresh
补充： transparent, burnt, bright, colourful, thick
fishy (鱼腥味的)
补充： stinky(发恶臭味的), fragrant(芳香的), pungent(刺鼻的)
smoky, spicy, bitter, sweet, fruity
补充： sour, hot, tasty, raw, salty
tender, soft, juicy, cold, sticky, smooth, creamy(像奶油的)
补充： greasy(多油的), crispy, hard, chewy, rubbery(有弹性的)
fat
chemicals
amount
soft drinks
taste
harmful
>听力文本
Waiter：Are you ready to order
Janet： Yes. I’m trying to eat more healthily，so I’ll just have a salad to start.
Waiter： Sure. What kind of dressing would you like on that
Janet：I’d like to have...
Harriet：［interrupting］Not a good idea，Janet. Salad with dressing always has a lot of sugar
and fat，as well as unhealthy chemicals.
Janet：Oh dear，maybe I won’t have any dressing，then.
Waiter： OK. Do you want anything to drink We have soft drinks，juice，tea and coffee.
Janet： The juice must be healthy. It comes from fruit， right I think I’ll have that.
Harriet： Don’t be so sure! Did you know that a lot of fruit juice only has a small amount of real
fruit It mainly contains chemicals that taste like fruit. Even 100% fruit juice can have as
much sugar as soft drinks.
Janet：Uh，maybe I’ll just have some water，then.
Waiter：Fine. How about dessert
Janet：Do you have fat-free yoghurt
Harriet：［interrupting］Sorry，but there’s a big problem with fat-free yoghurt，Janet. Yoghurt
tastes very bad without fat. That’s why they add a lot of sugar to make it taste better. And
you know sugar can be harmful if you eat too much.
Janet： Oh，I see. Thanks for the advice，Harriet...I’ll have a salad with no dressing and a glass
of water. And I won’t have dessert.
Waiter：No problem. And，for you，madam What would you like to order
Harriet： Oh，I’ll have a double hamburger with French fries and a cola.
Janet：What
Harriet： Aha...Just joking. I’ll have the same as she ordered. Thanks!
Student A: a salesperson
Student B: a customer
Role play
An example
A: Good morning, Maden. Can I help you
B: I'd like to buy something to drink. Do you have anything to recommend
A: Yes, of course. Did you know that we have the most popular mixed fruit drink in our shop.
B: Oh, really I haven't heard of that. What's the drink made from
A: It's totally made from natural products. It's a mix of six different fruits and vegetables.
B: Does it have any additives like sugar in it and what does it taste like
A: No, the ingredients are 100% natural. Well, since there is no added sugar, the drink just keeps the original flavor of the ingredients.
B: Then what are the benefits from drinking it
A: Well, the drink is rich in fibre and vitamins, so it's good for our digestive system.
B: How much is it
A: It's 15 yuan per bottle. Customers can get 20% off the total price if they buy five bottles or more at a time.
B: OK, then I'll take five bottles.
A: Here you are. Thank you. See you next time.
To know some modal verbs
To learn how to use modal verbs
To learn how to make comments about food
b
e
d
c
a
have to
dare not
had better
needn’t
be able to
What are modals
In English grammar, a modal, also known as a modal auxiliary or modal verb, is a verb that combines with infinitive without ‘to’ (不带to的不定式) to express possibility, certainty, permission, request, ability , obligation, etc.
a. be able to
Meaning: to indicate ability
Use ‘be able to’ to fill the blanks.
Up till now, he _________________get in touch with her.
You ____________speak perfect English very soon.
I regret ________________help her.
hasn’t been able to
will be able to
not being able to
What’s the difference between ‘be able to’ and ‘can/could’
Examples：
He can swim.
I’m able to express my idea in a clear way.
I could / was able to play the piano when I was young.
They are used to indicate ability.
Examples
He could swim across the river.
Though he was sick, he was able to swim across the river.
We could reach the top of the mountain.
After five hours of climbing, we were able to reach the top of the mountain.
Though he was sick
After five hours of climbing
‘was/were able to’ means that you succeeded in doing sth or managed to do sth in the past.
Benny, the Polish scientist, has spent his lifetime studying active volcanoes and deep caves in all parts of the world. In 1948, he went to a lake in the Congo to observe a new volcano which he later named Kituro. Benny ___________ set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he ___________________ stay near the volcano for very long. He noticed that a river of liquid rock was coming towards him. It threatened to surround him completely, but Benny managed to escape just in time. He waited until the volcano became quiet and he ___________ return two days later. This time, he managed to climb into the mouth of Kituro so that he _________ take photographs and measure temperatures. Benny has often risked his life in this way. He ______________ tell us more about active volcanoes than any man alive.
was able to
couldn’t/wasn’t able to
was able to
could
has been able to
b. dare
Meaning: to be brave enough to do sth
Dare he climb the tree ---No, he dare not.
He dare not go there because it is very dangerous.
He doesn’t dare to cross the river.
He dares to cross the river.
ordinary verb
c. have to
Meaning: to indicate obligations.
‘have to’is a semi-modal verb. It is like a modal verb because it fulfils a specific function, but it behaves like an ordinary verb in its formulation.
It has different forms according to number, person and tense:
I have to; he has to; she had to etc.
c. have to
Meaning: to indicate obligations.
② Think : what’s the negative form of ‘have to’
I don’t have to. She doesn’t have to.
③ It can combine with other modal verbs:
You will have to. He might have to.
d. had better
Meaning: to express suggestions, hopes and warnings
Form: had better do sth
She’d better get here soon, or she’ll miss the opening ceremony.
They had better not be late.
e. need
Meaning: to show that sth is necessary
You needn’t seem him, but I must.
Need I finish the work today
You need to see him.
The bike needs repairing/to be repaired.
ordinary verb
In terms of obligation and advice, what’s the difference between ‘have to’, ‘must’ and ‘should’
Conclusion
Obligation Advice
have to obligations which depend on circumstances situational/external strong advice
must obligations that you feel strongly about personal strong advice
should weak obligations (may come from tradition, customs or culture) correct/right thing to do neutral advice
c
a
d
b
Appearance Smell Taste Feel
shiny, large, round, pink, tiny, fresh
fishy
smoky, spicy, bitter, sweet, fruity
tender, soft, juicy, cold, sticky, smooth, creamy
5. Underline the words that describe food in the activity and put them into the table.
shiny, large, round, pink, tiny, fresh
补充： transparent, burnt, bright, colourful, thick
fishy (鱼腥味的)
补充： stinky(发恶臭味的), fragrant(芳香的), pungent(刺鼻的)
smoky, spicy, bitter, sweet, fruity
补充： sour, hot, tasty, raw, salty
tender, soft, juicy, cold, sticky, smooth, creamy(像奶油的)
补充： greasy(多油的), crispy, hard, chewy, rubbery(有弹性的)
fat
chemicals
amount
soft drinks
taste
harmful
>听力文本
Waiter：Are you ready to order
Janet： Yes. I’m trying to eat more healthily，so I’ll just have a salad to start.
Waiter： Sure. What kind of dressing would you like on that
Janet：I’d like to have...
Harriet：［interrupting］Not a good idea，Janet. Salad with dressing always has a lot of sugar
and fat，as well as unhealthy chemicals.
Janet：Oh dear，maybe I won’t have any dressing，then.
Waiter： OK. Do you want anything to drink We have soft drinks，juice，tea and coffee.
Janet： The juice must be healthy. It comes from fruit， right I think I’ll have that.
Harriet： Don’t be so sure! Did you know that a lot of fruit juice only has a small amount of real
fruit It mainly contains chemicals that taste like fruit. Even 100% fruit juice can have as
much sugar as soft drinks.
Janet：Uh，maybe I’ll just have some water，then.
Waiter：Fine. How about dessert
Janet：Do you have fat-free yoghurt
Harriet：［interrupting］Sorry，but there’s a big problem with fat-free yoghurt，Janet. Yoghurt
tastes very bad without fat. That’s why they add a lot of sugar to make it taste better. And
you know sugar can be harmful if you eat too much.
Janet： Oh，I see. Thanks for the advice，Harriet...I’ll have a salad with no dressing and a glass
of water. And I won’t have dessert.
Waiter：No problem. And，for you，madam What would you like to order
Harriet： Oh，I’ll have a double hamburger with French fries and a cola.
Janet：What
Harriet： Aha...Just joking. I’ll have the same as she ordered. Thanks!
Student A: a salesperson
Student B: a customer
Role play
An example
A: Good morning, Maden. Can I help you
B: I'd like to buy something to drink. Do you have anything to recommend
A: Yes, of course. Did you know that we have the most popular mixed fruit drink in our shop.
B: Oh, really I haven't heard of that. What's the drink made from
A: It's totally made from natural products. It's a mix of six different fruits and vegetables.
B: Does it have any additives like sugar in it and what does it taste like
A: No, the ingredients are 100% natural. Well, since there is no added sugar, the drink just keeps the original flavor of the ingredients.
B: Then what are the benefits from drinking it
A: Well, the drink is rich in fibre and vitamins, so it's good for our digestive system.
B: How much is it
A: It's 15 yuan per bottle. Customers can get 20% off the total price if they buy five bottles or more at a time.
B: OK, then I'll take five bottles.
A: Here you are. Thank you. See you next time.