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模块六 Module VI Making a better world《Grammar and usage(1)： Overview： infinitive, verb-ing and verb-ed(I)》新课标教案优质课下载
Practice and consolidation.
Teaching important and difficult point:
How to understand the use of Infinitive, Verb-ing and Verb-ed as the subject, the attributive and the object complement.
Teaching tools:
The multimedia, some chalk and blackboard
Teaching procedures:
Step 1 Greeting and lead-in
Greet as usual.
Introduce Infinitive, Verb-ing and Verb-ed.
Step 2 Infinitive and the verb-ing used as the subject
Read each sentence and point out the function of each to infinitive or verb-ing.
1. To see / Seeing is to believe / believing.
2. Playing football is my favorite activity when I am free.
3. It is important to consult a doctor before you take this medicine.
4. It is necessary for young people to know how to use a computer.
5. It is no use talking to him.
不定式和v-ing作主语的区别
1) v-ing作主语通常表示抽象动作; 而不定式作主语表示具体动作。
Smoking is prohibited here. （抽象）
It is not very good for you to smoke so much. （具体）
2) v-ing作主语时，通常用以表示一件已知的事或经验。
不定式短语通常用来表示一件未完成的事或目的。
Climbing mountains is interesting. （经验）
To drive a car during such a rush hour is tiring. （未做）
3) 不定式做主语，一般用it当形式主语，把作主语的不定式短语后置。