《Teenagers should be allowed to choose their own clothes》PPT课件21

Pair work

Are your home rules the same or different?

Home rules   the same   different

should get up early

should go to bed early

shouldn’t play computer games

shouldn’t watch TV in bed

should wash hands

should take off shoes

shouldn’t stay out late

shouldn’t smoke

... ... ...

3b Read again and answer the questions. 

1.What did the mom do when the writer was a baby and a small child?

When the writer was a baby and a small child, the mom did these:

· sang to him and stayed by his side when he cried

· gave him food and warm arms to sleep in when he  was tired and hungry

· kept  him safe when he was running through the field 

· hugged him and lifted him up when he fell

2. Why do you think the writer talked back to his mom when he was seven and nine years old?

He felt that he was growing up and he did not want to be treated like a little child anymore.

3. How did the writer feel when he was a teenager and his mom said “Please be back by ten”?

He was upset because he felt that he was old enough to be independent and should not be told what to do.

4. After reading the whole poem, how do you think the writer feels about his mom?

He loves his mom and is thankful for what she has done for him.

... ... ...

Look at these sentences.

I think students should be allowed to do homework with friends.

Sixteen-year-olds should not be allowed to drive.

Do you think sixteen-year-olds should be allowed to choose their own clothes?

含情态动词的被动语态

肯定句: 主语+ 情态动词+be+ 动词过去分词.

否定句: 主语+情态动词+not+ be+动词过去分词.

疑问句: 情态动词+ 主语+ be+ 动词过去分词?

(一)将主动语态的宾语变成被动语态的主语。

(二)将含情态动词的主动句式变成被动句式，即：“情态动词+动词原形”变成“情态动词+be+过去分词”，然后再在其后加“by+主动句中的主语(人称代词用宾格)”。by短语也可省略。 

请看下列各句：

You should finish your homework first.

Your homework should be finished (by you) first. 

You can take this magazine home. 

This magazine can be taken home (by you).  

... ... ...

含情态动词的疑问句、否定句的变化均需借助于情态动词完成。 

1. 一般疑问句：直接将被动语态的陈述句中的情态动词提前。 

Must this task be finished at once?

这项任务必须立即完成吗？

注意：含情态动词的被动语态的一般疑问句的回答，应保留原情态动词，但must表“必须”时，其否定回答应用needn’t；need表“必要”时，其肯定回答应用must。如： 

--- Must my exercise book be handed in now?

我的练习本必须现在上交吗？ 

--- Yes, it must. 是的，必须现在上交。 

（No, it needn’t. 不，不必现在上交。） 

--- Need he be operated on at once?

他必须立即手术吗？ 

--- Yes, he must. 是的，他必须。 

（No, he needn't. 不，他不必。） 

2. 特殊疑问句 ：由特殊疑问词加上被动语态的一般疑问句构成。 

When must this task be finished?

这项任务必须在什么时候完成？

3. 否定句： 在情态动词后面加上not或never即可，但must表'必要'时否定式为needn't。 

This task needn't be finished at once.

这项任务没必要立即完成。  

... ... ...

Free Talk

4c What rules should an English club have? Make a list of rules for it.

Homework

Talk about what should be allowed to do or should not be allowed to do in school or your family.

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