unit12 语法:情态动词[下学期]
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文档简介
The teaching plan for unit 13
--- Grammar ( Review Modal Verbs )
Time：Mar.26, 2007 Class: Class3, Senior2 Teacher: Chen xiaoping
Teaching aims:
1. Lead Ss to review modal verbs, especially some important modal verbs: must/have to; should/ought to/; can/could/ be able to and so on.
2. Learn to use modal verbs to finish the relative exercises better.
Important and difficult points:
1. Master the important modal verbs clearly.
2. How to understand and use the modal verbs better.
Teaching methods: explanation and practice, individual and class work.
Teaching aids: blackboard
Teaching procedure:
Step I: Lead-in
How much do you know about modal verbs Let Ss talk something about it.
Step II: 易混易错用的情态动词
1.must/have to
must 表示人在主观上认为的必要、必须、一定要
have to 表示受环境或习惯支配的客观必要 “不得不”，能用于更多时态。
Eg. I must study hard for my parents.
It’s getting late. He has to go home.
We have to buy our tickets at least one week before the Spring Festival.
其否定式mustn’t表示“不准，禁止” 而don’t have to=needn’t
2.should/ought to
should 表示主观看法“应该”
ought to 表示应该,语气比should重，含“按道理应当…”,反映的是客观情况.
3.表示能力: can, could, be able to
be able to 能用于各种时态。can / could 只能表示现在或过去的能力。
was / were able to : “设法做成某事” 相当于 managed to do sth.
succeeded in doing sth.。
4.need/dare可用作情态动词,没有人称和数的变化;也可以用作实意动词.
Eg. No one dare tell him the bad news.= No one dares to tell him the bad news.
You needn’t go there.= You don’t need to go there.
5.情态动词表推测的用法
must+do “一定，准是” 否定用can’t 疑问用can
Eg.Your parents must be expecting you home.
must +have done“一定已经” 否定式can‘t have done
may/might +do“可能” may/might+have done“可能已经” should+do“应该”
6.情态动词+完成式的用法
1.should /ought to have done 本来应做而未做，表达遗憾感彩
2.对过去情况的推测
must have done 一定已做 may/might have done可能已做
can’t have done不可能做
3.needn’t have done表示本不必做而做了
7. 熟悉情态动词委婉用法：
could, would, might等情态动词均有委婉用法，它们不是过去式而是表示语气委婉、客气、礼貌，常用与疑问句，并多用于习惯表达， 如would you please, would you mind, would you like to等，might还可以用于肯定句表示推测，表示可能性小, might和could表示征求对方意见时，回答必须还成may, can.
Step III Practice
First, ask them to do the exercises by themselves, then check the answers together.
Step IV Homework
Finish the exercises about “Grammar” part in this unit after class.
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--- Grammar ( Review Modal Verbs )
Time：Mar.26, 2007 Class: Class3, Senior2 Teacher: Chen xiaoping
Teaching aims:
1. Lead Ss to review modal verbs, especially some important modal verbs: must/have to; should/ought to/; can/could/ be able to and so on.
2. Learn to use modal verbs to finish the relative exercises better.
Important and difficult points:
1. Master the important modal verbs clearly.
2. How to understand and use the modal verbs better.
Teaching methods: explanation and practice, individual and class work.
Teaching aids: blackboard
Teaching procedure:
Step I: Lead-in
How much do you know about modal verbs Let Ss talk something about it.
Step II: 易混易错用的情态动词
1.must/have to
must 表示人在主观上认为的必要、必须、一定要
have to 表示受环境或习惯支配的客观必要 “不得不”，能用于更多时态。
Eg. I must study hard for my parents.
It’s getting late. He has to go home.
We have to buy our tickets at least one week before the Spring Festival.
其否定式mustn’t表示“不准，禁止” 而don’t have to=needn’t
2.should/ought to
should 表示主观看法“应该”
ought to 表示应该,语气比should重，含“按道理应当…”,反映的是客观情况.
3.表示能力: can, could, be able to
be able to 能用于各种时态。can / could 只能表示现在或过去的能力。
was / were able to : “设法做成某事” 相当于 managed to do sth.
succeeded in doing sth.。
4.need/dare可用作情态动词,没有人称和数的变化;也可以用作实意动词.
Eg. No one dare tell him the bad news.= No one dares to tell him the bad news.
You needn’t go there.= You don’t need to go there.
5.情态动词表推测的用法
must+do “一定，准是” 否定用can’t 疑问用can
Eg.Your parents must be expecting you home.
must +have done“一定已经” 否定式can‘t have done
may/might +do“可能” may/might+have done“可能已经” should+do“应该”
6.情态动词+完成式的用法
1.should /ought to have done 本来应做而未做，表达遗憾感彩
2.对过去情况的推测
must have done 一定已做 may/might have done可能已做
can’t have done不可能做
3.needn’t have done表示本不必做而做了
7. 熟悉情态动词委婉用法：
could, would, might等情态动词均有委婉用法，它们不是过去式而是表示语气委婉、客气、礼貌，常用与疑问句，并多用于习惯表达， 如would you please, would you mind, would you like to等，might还可以用于肯定句表示推测，表示可能性小, might和could表示征求对方意见时，回答必须还成may, can.
Step III Practice
First, ask them to do the exercises by themselves, then check the answers together.
Step IV Homework
Finish the exercises about “Grammar” part in this unit after class.
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2