Grammar and usage(1): Overview: infinitive, verb-ing and verb-ed(I)评课稿

Unit 1 Laughter is good for you

Grammar and usage Teaching aims:

the students will be able to 1. tell the differences between ―to do‖

―doing‖done 2. express their opinions using the verb forms; 3. use non-finite in exercises correctly.

Teaching procedures: Step 1 lead in

Give the students some sentences

They are: subject,attributive ,and object complement,

. What is the grammatical term for the three verb forms? —non-finite

Step 2

1. Ask the students to fill in blanks to check how well they know about non-finite. 2.

We can see that both ―to do‖

and ―doing‖

can be used as subject, but is there any differences between the two?

The to infinitive is often used as the subject of a sentence. When we talk about a general idea, we sometimes use verb-ing as the subject. In the following sentence pattern, we use “to do”

as the subject: It is + adj. + (for sb.) to do But in the pattern ―It is no use/ no good doing‖

we use ―doing‖

as the subject. Eg. It is no use copying all the words down. It is no good arguing with him.

3.

3. Compare the sentences and find out the difference between “v-ed”

and “v-ing”

as attributives.

4.

Conclusion: When we use non-finite as attributives: v-ed --passive meaning / complete action v-ing –

active meaning/ continuous action to do–

action that will happen in the future

5．

Study the following sentences and tell the difference between “(to) do”“doing”and ―done‖

, as object complement. 6．

Conclusion: to do—an action that has finished (the whole process) doing—an action that is taking place done—an action with passive meaning

Step 3 Practice

1. Part A 2. Part B