《Grammar and usage(1)： Modal verbs： general introduction》公开课教案下载

《Grammar and usage(1)： Modal verbs： general introduction》公开课教案优质课下载

Teaching key and difficulty:

Learn that modal verbs can be used to about ability﹨obligation﹨certainty﹨permission and to make requests﹨suggestion﹨offers and give advice.

Teaching methods: Explanation

Teaching procedure:

Step one: Introduce modal verbs with following :

情态动词，在英文中主要用来表示说话人的看法、态度等。

一．情态动词的基本用法

（一．）can和could

情态动词用法例句

can/could

(1)表示能力1．“I don’t think Mike can type.” “Yes, he can.”

2．I can speak fluent English now , but I couldn’t last year.(2)表示请求和允许。疑问句中常用could代替can，使语气更委婉。回答时用can/mayYou can’t smoke here.

Can/Could I use your bike?

3.---Could /Might I use your bike tomorrow morning?

---Yes, you can/may.(3)在肯定句中，表示“有时可能”。表示客观可能性，并不涉及具体某事会发生，常用来说明人或事物的特征，要表达具体某事实际发生的可能性时，需用may，might。Even an experienced teacher can make mistakes. （客观可能性）

It can be warm even in winter. （客观可能性）

Accidents can happen on such rainy days. （客观可能性）

I may stay at home this weekend.（实际可能性）

Peter might come to join us tonight, but he isn’t sure.(实际可能性)

6. We may go camping next Sunday. .(实际可能性)(4)表示猜测、惊异、怀疑、不肯定等态度，主要用在否定句、疑问句和感叹句中。Can/can’t do (现在)

can/can’t/could/couldn’t have done (过去)The story can’t be true.

How can/could you be so careless!

Look, his coat is still here, so he can’t/couldn’t have left.

My dictionary is missing. Who can/could have taken it away?

Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony?