Grammar and usage(2): Modal verbs: comparisons课件配套优秀

Module 4 Unit 2 Grammar and usage Modal verbs +have done教学设计

Teaching Objectives: At the end of this class, the students are expected to 1.

Know two types of “modal verbs+ have done”: being used in a subjunctive mood or to infer. 2.

Master the meaning and usage of should have done, could have done, would have done, must have done, may/might have done, and can/could have done. 3.

Put “modal verbs + have done” in practice.

Teaching importance: 1.

Master the meaning and usage of could have done, and can/could have done. 2.

Put “modal verbs + have done” in practice.

Teaching aids: Blackboard, chalks, computer, screen

Teaching procedures: Step I导入

Listen to a song and fill in the blanks. I never knew I

have known something wouldn’t be true

Baby you know that I'm so into you 1

More than I know I

do So why, why, why, why

we wait? And I, I, I, I

be waiting Waiting for someone new

Even though that it wasn’t you

Step II. 探究发现：

Part

I [should have done] 1)

The flowers have all died. I should have watered them often. 2)

Tom, you are too lazy. The homework should have been finished yesterday. should have done意为“

”，而事实上

[could have done] 1)

Notre-Dame de Paris was damaged in the fire. What a pity! But I think the fire could have been avoided. 2)

We could have visited the museum but we spent too much time shopping. could have done意为“

”

，

而事实上

[would have done] 1)

I would have told you all about the boy's story, but you didn't ask me. 2) If Deng Chao hadn’t made a mistake, he would have become the champion 2

of Running Man. would have done意为“

”，而事实上

※Conclusion：should have done, could have done，

would have done都可以用于

语气，

表示与

相反。

Part

II [must have done] 1)

All the Chinese people must have felt proud when Xu Haifeng won the first gold medal for his country. 2)

It must have rained last night, for the ground is wet. must have done意为“

”

表示对

的推测。

[can/could have done] 1)

Serena boarded the plane at 6 a.m. Can/ could she have arrived?

2)

She was two hours late. What can have happened to her? can/could have done意为“

”

表示对

的推测

表推测时通常用于

（句型）

[may/ might have done] 1)

On April 22th, China successfully launched the 44TH Beidou Navigation 3

Satellite(北斗导航卫星). The high school students may/might have known this piece of news from the newspaper.

2)

She is late. She may/might have missed the bus this morning. may/might have done意为“

”

表示对

的推测。

※

[Conclusion]: When we use “must have done”, “can/could have done”, or “may/might have done”

what are their similarity and differences in usage? Similarity:

Differences: 1.

2.

Step III即时训练

Fill in the blanks. 1）4月23日，湖南省发布了新高考政策，这项政策一定已经引起了广泛关注。

On April 23th. Hunan province issued a new policy of College Entrance Examination. This policy

.

2）他是《复仇者联盟》的粉丝，他前天可能看了《复仇者联盟4》的首映式。

He is a fan of Avengers, so

the premiere of Avengers: Endgame the day before yesterday. 3）兰老师现在不在办公室，他可能已经去了哪里呢？

Mr. Lan is not in the office.

? 4

4）4月23日，海上阅兵式（Sea parade）在下午两点直播。我当时有课，否则我就会看了。

On April 23th, the Sea parade was broadcast live at 2 p.m. and I was having a class then. Otherwise,

. 5）

我本可以在上周的考试中得高分的，但是我太粗心了。

I

in the examination last week, but I was too careless. 6）

你今天早上迟到了，你本该在7点20分之前到校的。

You were late this morning. You

before 7.20 a.m.

Step IV Homework Finish the exercise in Page 42 (课课练). 5