Unit 1 Food for thought Using language 语法课件(共16张PPT)-外研版(2019)必修第二册
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| 名称 | Unit 1 Food for thought Using language 语法课件(共16张PPT)-外研版(2019)必修第二册 |  | |
| 格式 | pptx | ||
| 文件大小 | 1.3MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-10-03 09:45:21 | ||
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(共16张PPT)
Modals 情态动词 (1)
What have you learnt about modals at junior high
(Rules and examples)
1．情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。
She can speak English though she is six.
2．情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。
They must be in the classroom.
3．构成否定句时，not放在其后面, have to例外 (don’t have to)。
The young man can’t carry the big stone.
4．情态动词后接动词原形。
You have to do as I told you.
I. Basic rules (Worksheet page 21)
A review:
情态动词歌曲_哔哩哔哩_bilibili
II. Specific examples
A summary:
can的过去式：could
will的过去式：would
may的委婉形式：might
ought to≈should
don’t have to≈needn’t
be able to≈can
have to≈must
mustn’t≈can’t
II. Specific examples
Today:
be able to
needn’t
have to
dare not
had better
III. Function and meanings
Talk about the function of modals. Then match the meanings to the words in bold.
(1)can只有现在时和过去时(could), 而be able to则有更多的时态变化, 在非谓语动词中只能用be able to。
Being able to communicate ideas in a meaningful way is a valuable skill.
能够以有意义的方式交流想法是一项宝贵的技能。
(2)can一般指自身具有的能力, 而be able to则表示经过一段时间的努力后所具有的能力, 相当于manage to do或succeed in doing。
(3) be able to可以用在一些情态动词之后。
She ______ sing the song in English.
He will _____________ sing this song in English in a few minutes, too.
A. can & be able to
can
be able to
(1) need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, 多用于疑问句、否定句或条件句中。
There’s plenty of time. You needn’t drive so fast.
注意：由need/shall/must引起的一般疑问句，肯定回答常用must或have to；否定回答常用needn’t或don’t have to。
—Need/Must I finish the work today / Shall I tell John about it
—Yes, you ____________/ No, you ____________
(2) need作实义动词时，后可接名词、动名词、不定式等，有人称、时态和数的变化。
The bike needs repairing.＝The bike needs to be repaired.
B. needn’t
must/have to.
needn’t/don’t have to.
(1) have to“不得不”，有时态、人称和数的变化，其否定形式为don’t/didn’t have to (haven’t to表示没做过某事：He haven’t lie)。
Students have to wear a uniform.
(2) have to表示一种客观的需要，而must表示一种主观的需要。
I __________ finish my homework today. I’m going out tomorrow.
I __________ finish my homework today. We have to hand it in tomorrow.
C. have to & must
must
have to
dare 表示“敢……”,多用于否定句、疑问句、表示怀疑的句子中。既可以作实义动词(加不定式），也可以作情态动词（加原型），即以下都可以:
dare (not) (to) do
do/does/did/will not dare (to) do
(BE: daren’t: daren’t do)
他不敢表达自己的想法。
He dared not to say what he thought.
He didn’t dare to say what he thought.
He daren’t say what he thought.
D. dare not
had better后跟动词原形，表示“最好……”, 否定式: had better not do。
You’d better get there before it gets dark.
你最好天黑前到那。
__________________________________
我们最好不要这么大声说话。
E. had better
We’d better not talk so loudly.
Exercise: meaning
Underline the modals in the introduction to an app and talk about their meanings.
download, upload
related:
relate A to B; be related to; relation
diet:
be on a diet 节食；
a healthy/balanced/varied diet 健康/平衡/多样化饮食
addict:
a sugar addict 中毒者
be addicted to sugar/social media
addiction n. 中毒
He is now fighting his addiction to smartphone.
If you dare not try a “painful” diet to stay healthy, this new app is the perfect solution-and you needn’t pay for it! The app works by quickly showing photos of different food. All you have to do is select the photos of healthy food. Then you’ll be able to train your brain to select healthy food in real situations. So , if you’re a sugar addict and aren’t able to say no to chocolate or cola, you had better download it now!
Exercise: use
Complete the tips for good table manners with the correct form of the modals you learned today.
While going on your first trip to the UK is exciting, new and different customs (习俗；海关：复数) can also be confusing. Table manners (礼仪，用复数) are no exception. But don’t worry — here are some tips:
You 1. _____________ wait until everyone else has been served before you start eating.
have to
Exercise: use
Sometimes there are so many knives and forks that you 2. ________ pick them up in case (以防万一，加句子；in case of + 名词/动名词) you get it wrong. The trick (诀窍，技巧) is to start with the ones on the outside.
When you finish your meal, you 3. ____________ place (盘，碟) the knife and fork together on your plate with the handles (把手；V. 处理，口语化 handle this problem) at the four o’clock position.
dare not
had better
Exercise: use
Table manners, however, can differ in (在...方面不同) different situations. For example, you 4. __________ use a knife and fork when eating a hamburger or pizza. Just remember: when in Rome, do as the Romans do, and you will 5. ___________ enjoy the local cuisine!
needn’t
be able to
Assignment
Modals 情态动词 (1)
What have you learnt about modals at junior high
(Rules and examples)
1．情态动词有一定的词义，不能单独作谓语，需和实义动词或系动词一起作谓语。
She can speak English though she is six.
2．情态动词一般无人称和数的变化，个别情态动词有现在时和过去时两种时态变化。
They must be in the classroom.
3．构成否定句时，not放在其后面, have to例外 (don’t have to)。
The young man can’t carry the big stone.
4．情态动词后接动词原形。
You have to do as I told you.
I. Basic rules (Worksheet page 21)
A review:
情态动词歌曲_哔哩哔哩_bilibili
II. Specific examples
A summary:
can的过去式：could
will的过去式：would
may的委婉形式：might
ought to≈should
don’t have to≈needn’t
be able to≈can
have to≈must
mustn’t≈can’t
II. Specific examples
Today:
be able to
needn’t
have to
dare not
had better
III. Function and meanings
Talk about the function of modals. Then match the meanings to the words in bold.
(1)can只有现在时和过去时(could), 而be able to则有更多的时态变化, 在非谓语动词中只能用be able to。
Being able to communicate ideas in a meaningful way is a valuable skill.
能够以有意义的方式交流想法是一项宝贵的技能。
(2)can一般指自身具有的能力, 而be able to则表示经过一段时间的努力后所具有的能力, 相当于manage to do或succeed in doing。
(3) be able to可以用在一些情态动词之后。
She ______ sing the song in English.
He will _____________ sing this song in English in a few minutes, too.
A. can & be able to
can
be able to
(1) need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, 多用于疑问句、否定句或条件句中。
There’s plenty of time. You needn’t drive so fast.
注意：由need/shall/must引起的一般疑问句，肯定回答常用must或have to；否定回答常用needn’t或don’t have to。
—Need/Must I finish the work today / Shall I tell John about it
—Yes, you ____________/ No, you ____________
(2) need作实义动词时，后可接名词、动名词、不定式等，有人称、时态和数的变化。
The bike needs repairing.＝The bike needs to be repaired.
B. needn’t
must/have to.
needn’t/don’t have to.
(1) have to“不得不”，有时态、人称和数的变化，其否定形式为don’t/didn’t have to (haven’t to表示没做过某事：He haven’t lie)。
Students have to wear a uniform.
(2) have to表示一种客观的需要，而must表示一种主观的需要。
I __________ finish my homework today. I’m going out tomorrow.
I __________ finish my homework today. We have to hand it in tomorrow.
C. have to & must
must
have to
dare 表示“敢……”,多用于否定句、疑问句、表示怀疑的句子中。既可以作实义动词(加不定式），也可以作情态动词（加原型），即以下都可以:
dare (not) (to) do
do/does/did/will not dare (to) do
(BE: daren’t: daren’t do)
他不敢表达自己的想法。
He dared not to say what he thought.
He didn’t dare to say what he thought.
He daren’t say what he thought.
D. dare not
had better后跟动词原形，表示“最好……”, 否定式: had better not do。
You’d better get there before it gets dark.
你最好天黑前到那。
__________________________________
我们最好不要这么大声说话。
E. had better
We’d better not talk so loudly.
Exercise: meaning
Underline the modals in the introduction to an app and talk about their meanings.
download, upload
related:
relate A to B; be related to; relation
diet:
be on a diet 节食；
a healthy/balanced/varied diet 健康/平衡/多样化饮食
addict:
a sugar addict 中毒者
be addicted to sugar/social media
addiction n. 中毒
He is now fighting his addiction to smartphone.
If you dare not try a “painful” diet to stay healthy, this new app is the perfect solution-and you needn’t pay for it! The app works by quickly showing photos of different food. All you have to do is select the photos of healthy food. Then you’ll be able to train your brain to select healthy food in real situations. So , if you’re a sugar addict and aren’t able to say no to chocolate or cola, you had better download it now!
Exercise: use
Complete the tips for good table manners with the correct form of the modals you learned today.
While going on your first trip to the UK is exciting, new and different customs (习俗；海关：复数) can also be confusing. Table manners (礼仪，用复数) are no exception. But don’t worry — here are some tips:
You 1. _____________ wait until everyone else has been served before you start eating.
have to
Exercise: use
Sometimes there are so many knives and forks that you 2. ________ pick them up in case (以防万一，加句子；in case of + 名词/动名词) you get it wrong. The trick (诀窍，技巧) is to start with the ones on the outside.
When you finish your meal, you 3. ____________ place (盘，碟) the knife and fork together on your plate with the handles (把手；V. 处理，口语化 handle this problem) at the four o’clock position.
dare not
had better
Exercise: use
Table manners, however, can differ in (在...方面不同) different situations. For example, you 4. __________ use a knife and fork when eating a hamburger or pizza. Just remember: when in Rome, do as the Romans do, and you will 5. ___________ enjoy the local cuisine!
needn’t
be able to
Assignment