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模块一 Module I Teenage experiences《Grammar and usage(1)： Introduction to attributive clauses》集体备课教案优质课下载
Step 1 lead in (PPT 4-7)
Teacher reminds students of the letters that Agony Aunt Annie wrote to Sarah and Andrew.
Q: What can we learn from her letters about friendship?
Students express their ideas freely. Then teacher concludes in this way:
To talk to a friend openly and sincerely when something unpleasant happens is very important if we are to keep the friendship. (to do as subject and predicative of a sentence)
We should always remind ourselves to trust our friends whatever happens. (to do as object complement of a sentence)
Students are asked to pay attention to the parts in bold, and thus To-infinitive is introduced.
Step 2 Different functions of To-infinitive (PPT 8-15)
1. Ss are asked to study the two letters on Page 5 again, this time trying to find out more To-infinitives in the letters and tell their functions in the sentences.
(1) You have every right to feel betrayed … (as attribute)
(2) … she wanted to embarrass you in public, … (as object)
(3)It seems you need to apologize quickly to avoid losing a good friend! (as object and adverbial respectively)
(4) …, one of you has to be first to admit … (as object and attribute respectively)
2. With the guidance of T, Ss try to conclude all the functions of To-infinitive:
动词不定式由“to+动词原形”构成，其否定形式是“not to do”。动词不定式可以单独使用或用作动词不定式短语的一个部分。不定式在句中可作主语、宾语、状语、表语和定语等，但不能单独作谓语。
作主语
To read English every day is necessary. （不定式to read English every day 作主语）
动词不定式作主语时，为了句子平衡，通常用it作形式主语，而把不定式放在谓语之后。例如：
It is necessary to read English every day.
It is a good idea to go for a picnic today.
作宾语
I want to see a film.（不定式to see a film 作宾语）
不定式作宾语时，若还带有宾语补足语，往往把不定式放在补足语后，用it作形式宾语。例如：
He find it difficult to learn Chinese.
We think it important to master a foreign language.