高一英语情态动词PPT课件
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Paris can be very hot in summer. (possibility)
The chicken must be cooked thoroughly.(Necessity
You have to book in advance. (Necessity )
Visitors must remove all footwear before entering. (stating formal rules and regulations ) I will see you tomorrow. (willingness or prediction)
1.Do you think Amy might have arrived by now? sometimes be used to talk about a possible
event occurring before a time in the future, e.g. 2.It might have been sold by the time we get there.
You must go. (an internal need or obligation) You have to go . (an external need or obligation) You mustn’t go . (prohibition 禁止) You don’t have to go .(an absence of obligation or You can use my phone if nyoeuedw)a. nt . (permission)
That may/might be a better thing to do. ( Possibility)
Calculators may not be used in the
Байду номын сангаас
examination.
(Permission)
May I be excused? (requests for permission)
It is necessary that you wear shoes. You must/have to wear shoes. It is not necessary that you wear shoes. You don’t have to wear shoes. It is necessary that you do not wear shoes. You mustn’t wear shoes. It is possible that he went to the dentist.
• POSSIBLE • IMPOSSIBLE • CERTAIN We go out. (CERTAIN) We’ll go out. We stay at home. (IMPOSSIBLE) We can’t stay at home. We go to the cinema. (POSSIBLE) We might go to the
He may have gone to the dentist.
Match the Answers to the Questions
and study the modal verbs.
Modal verbs+have+past participle
• May/might + have + past participle can be used to talk about a possible event in the past, e.g.
• Must + have + past participle is used to draw a conclusion(得出结论,推论) about something that happened in the past,
cinema. 1.I have a drink. (CERTAIN) 2.I have coffee. (IMPOSSIBLE) 3.I have tea. (POSSIBLE) 4.We work tonight. (POSSIBLE) 5.You work tonight. (IMPOSSIBLE) 6.I work tonight. (CERTAIN)
The children shouldn’t/oughtn’t to drop litter on
the floor.
(Obligation)
He should/ought to cycle to work, the exercise
would be good for him.
(Suggestion, saying what is the best
Grammar
Modal verbsⅡ 情态动词
Unit2.book3
By Jerry
整体概况
+ 概况1
您的内容打在这里，或者通过复制您的文本后。
概况2
+ 您的内容打在这里，或者通过复制您的文本后。
概况3
+ 您的内容打在这里，或者通过复制您的文本后。 2
Revision
Tell the functions of the modal verbs.
7.I go home. (necessity) 8.We look after the old. (duty/obligation) 9.We do the work right now. (suggestion) 10.We are late. (prohibition)
Reformulate(改写) the following sentences using modal verbs
or a good thing to do)
The letter should/ought to arrive by Friday.
(Probability, indicating that someone expects something to be true or to happen)
Modal Verb Drill
The chicken must be cooked thoroughly.(Necessity
You have to book in advance. (Necessity )
Visitors must remove all footwear before entering. (stating formal rules and regulations ) I will see you tomorrow. (willingness or prediction)
1.Do you think Amy might have arrived by now? sometimes be used to talk about a possible
event occurring before a time in the future, e.g. 2.It might have been sold by the time we get there.
You must go. (an internal need or obligation) You have to go . (an external need or obligation) You mustn’t go . (prohibition 禁止) You don’t have to go .(an absence of obligation or You can use my phone if nyoeuedw)a. nt . (permission)
That may/might be a better thing to do. ( Possibility)
Calculators may not be used in the
Байду номын сангаас
examination.
(Permission)
May I be excused? (requests for permission)
It is necessary that you wear shoes. You must/have to wear shoes. It is not necessary that you wear shoes. You don’t have to wear shoes. It is necessary that you do not wear shoes. You mustn’t wear shoes. It is possible that he went to the dentist.
• POSSIBLE • IMPOSSIBLE • CERTAIN We go out. (CERTAIN) We’ll go out. We stay at home. (IMPOSSIBLE) We can’t stay at home. We go to the cinema. (POSSIBLE) We might go to the
He may have gone to the dentist.
Match the Answers to the Questions
and study the modal verbs.
Modal verbs+have+past participle
• May/might + have + past participle can be used to talk about a possible event in the past, e.g.
• Must + have + past participle is used to draw a conclusion(得出结论,推论) about something that happened in the past,
cinema. 1.I have a drink. (CERTAIN) 2.I have coffee. (IMPOSSIBLE) 3.I have tea. (POSSIBLE) 4.We work tonight. (POSSIBLE) 5.You work tonight. (IMPOSSIBLE) 6.I work tonight. (CERTAIN)
The children shouldn’t/oughtn’t to drop litter on
the floor.
(Obligation)
He should/ought to cycle to work, the exercise
would be good for him.
(Suggestion, saying what is the best
Grammar
Modal verbsⅡ 情态动词
Unit2.book3
By Jerry
整体概况
+ 概况1
您的内容打在这里，或者通过复制您的文本后。
概况2
+ 您的内容打在这里，或者通过复制您的文本后。
概况3
+ 您的内容打在这里，或者通过复制您的文本后。 2
Revision
Tell the functions of the modal verbs.
7.I go home. (necessity) 8.We look after the old. (duty/obligation) 9.We do the work right now. (suggestion) 10.We are late. (prohibition)
Reformulate(改写) the following sentences using modal verbs
or a good thing to do)
The letter should/ought to arrive by Friday.
(Probability, indicating that someone expects something to be true or to happen)
Modal Verb Drill