The Fifth Period
Non-finite Verbs
Teaching Aim:
Revise the Non-finite Verbs and Non-finite passive form.Get the students to do some exercises to master its usage,and correct the common mistakes that students make when doing exercises.
Teaching Important Point:
Master the usage of the Non-finite verb form,especially how to choose the correct form when we use it.
Teaching Difficult Point:
How to choose the correct form when the v.-ing form is used as adverbial and how to change the v.-ing form into a clause.
Teaching Methods:
Review inductive,discussion methods.
Teaching Aids:
1.the blackboard
2.the multimedia
Teaching Procedures:
Step Ⅰ Greetings and Lead-in
(Greet the students as usual.)
T:In this class,we’ll discuss how to use the Non-finite Verb.Let’s divide it into three parts,i.e.the Infinitive,the v.-ing and the Past Participle.Then we’ll do some exercises to master its usage and at last we’ll do a test.OK.Let’s study the first part: The Infinitive (Write them on the blackboard.)
Step Ⅱ Discussion
(Teacher lets students look at some sentences on the screen and pay attention to the under lined phrases.)
T:Please look at these sentences on the screen.
(Show the following on the screen.)
I want to go shopping.(object)
2. To answer the question is not easy.(subject)
3.Would you like anything to drink?(attribute)
4.He went to help the farmers. (adverbial)
5.She wanted you to ring her.(object complement)
As you know,the infinitives in these sentences are used as subject,object,object complement,attribute and adverbial for purpose.Maybe some of them are hard for you to master,but in fact they are very important.
Step Ⅲ Summary the Forms,the Tenses
and the Usages of the Infinitive and the
Infinitive Phrase
T:Today let’s sum up and review the forms and usages of the Infinitives.Please look at the diagram on the screen.
(Show the following on the screen.)
Forms of the Infinitive

Active
Passive
Indefinite
to do
to be done
Perfect
to have done
to have been done
Continuous
to be doing
——
Perfect continuous
to have been doing
——
Negative form
not/never to do
T:The tenses of the infinitive express time relatively to that of the predicate verb.If the action expressed by the infinitive is of the same time as or of later time than that expressed by the predicate verb,the infinitive or continuous forms should be used.If the action expressed by the infinitive is of earlier time than that expressd by the predicated verb,the perfect infinitive should be used.Please look at the examples on the screen.
(Show the following on the screen.)
I hope to visit Beijing again.=I hope that I’ll visit Beijing again.
He seemed to have known this.=It seemed that he had known this.
He seems to be studying hard.=It seems that he is studying hard.
T:Attention,please.
(1)The Infinitive without “to” is used after the verbs:make,have,let,feel,listen to,hear,watch,look at,see,notice,observe,etc.
(Write them on the blackboard.)
e.g.We saw him cross the street.
I listened to her sing a song.
But in the Passive Voice,the infinitive with “to” must be used.
e.g.He was seen to cross the street.
She was heard to open the door.
(2)The infinitive can be with “to”or without “to” after the verb “help”.
e.g.He helped me(to)carry the books upstairs.
Step Ⅳ Consolidation and Practice
T:Now you have known the usages of the Infinitive.Let’s do some exercise.Please look at the screen.
(Show the following on the screen.)
Choose the best answer to fill in the blanks:
1.They asked me______it a secret.
A.to keep B.keeping C.to be kept D.kept
2.The doctor did everything he could____
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