情态动词should和ought_to教案

课题Language:

Modal verbs: should & ought to

教学目标1.区分、理解并掌握should和ought to的用法。

2.能恰当使用should和ought to 表达自己的意见和看法。

重点难点考点重点：区分should和ought to

难点：ought to的否定式not 的位置; should 和ought to 的使用情境考点：should 和ought to 的使用情境

教学基本内容、知识大纲1.When do we use ‘should’or ‘ought to’?

2.should/ ought to + Vo

3.should表劝告、建议之意，强调主观看法，语气较委婉，

即“按我的想法该……”

ought to 语气强于should，强调“有责任、义务或按道理应该……”

4.The forms for different kinds of sentences:

Positive: S + should/ ought to + do sth.

Negative: S + should + not + do sth.

S + ought + not + to do sth.

Question: Should + S + do…?

Ought + S + to do…?

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本次课

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Step One Reviewing the modal verbs by circling the modal verbs in each sentence as follows:

1.Some people can live without meat.

2.May I use the phone please, Mr. White?

3.Could you tell me something about the book?

4.You must not smoke here.

5.What flavor would you like, chocolate or strawberry?

6.We should put rubbish in the bin.

7.She shouldn’t discuss it.

8.Should we discuss it now? / Ought we to discuss it now?

-- Yes, we should/ ought to.

-- No, we shouldn’t/ ought not to.

9.The students ought not to sleep in the class.

10.Tom ought to hand in his homework on time.

Step Two Leading in to teach the student the usage of ‘should’ and ‘ought to’ by explaining the above sentences from 6 to 10.

1. There are three questions for the student to summarize the structure of should/ ought to + Vo (the verbs do not change their form after modal verbs ) as follows:

●When do we use ‘should’ or ‘ought to’?

●How to use them?

●What’s the difference between ‘should’ and ‘ought to’?

2. Tell the student the answers for the third question which is we can use the modal verbs should and

ought to to say what is best or right to do. Should and ought to are similar in meaning. But the voice of ought to is stronger than should with the meaning of doing something for responsibility or obligation.

3. A task for consolidating the difference as follow:

Task one

Joyce and Ben are talking about the newspaper. Complete their conversation with the words as follows: ought to discuss / shouldn’t start / should choose / ought to elect / should buy

BEN We need a sports editor.

JOYCE Then we (1) _____________ one right away.

BEN We also need a title for the paper.

JOYCE Then we (2) _____________ one as soon as possible.

BEN Also, we need batteries for our recorder.

JOYCE Then we (3) ______________ some.

BEN Finally, should we start to publish next week?

JOYCE We ____________ that with the others first. Perhaps we (5) _________ until next term.

4. Telling the student the structures of different kinds of sentence after explaining Task one.

Positive: S + should/ ought to + do sth.

Negative: S + should + not + do sth.

S + ought + not + to do sth.

Question: Should + S + do…?

Ought + S + to do…?

Step Three Practice and consolidation

There are some tasks for practicing the structures of ought to and should and they will help the student to better understand and grasp the language point.

Task two

句型转换

a)We should take good care of the young tree. (改为一般疑问句)

________ we _______ good care of the young trees?

b)You ought to turn off the lights when you leave the room. (改为一般疑问句)

_______ I ______ ______ off the lights when I leave the room?

c)You ought to put your bike under the tree. (改为否定句)

You ______ ______ ______ ______ your bike under the tree.

d)The child should drink some orange juice. (改为否定句)

The child ______ ______ ______ orange juice.

e)They should arrive at the station before 7 o’clock. (就划线部分提问)

______ ______ ______ ______ at the station?

Asking student to pay attention to the changes in Q4 when the word ‘some’puts into a negative