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必修3《Grammar》精品教案优质课下载
(3)But+ infinitive
Teaching important points:
1. The usage of the infinitive structure.
2. The elements of the infinitive used in a sentence.
Teaching difficult points:
How to understand the infinitive and use it correctly.
Teaching aids and teaching methods:
Multimedia computer
Question and answer discussion ;activity-based method ; tasks-based ; explanation Teaching Procedures:
Step 1. Lead-in
1.不定式的时态与语态
EMBED Office12.dps.Slide.8
2.不定式的用法
A ‘to’-infinitive can be used as…
主语（Subject）
(常用it做形式主语，不定式后置)
eg. 1.To master a foreign language is necessary for a student.
.It is necessary for a student to master a foreign language.
表语（Predicative）
eg.1.Your job is to wash dishes.
2.All I did was (to) give him some advice.
宾语（Object）
三个希望两答应（hope、wish、want、agree、promise）
两个要求莫拒绝( demand、ask、refuse )
设法学会做决定(manage 、learn 、decide)