不定式短语作主语时。It’s terrible to take roller coaster.。How terrible it is to take roller coaster。a shame) + 不定式。Step I Introduction。
usage教案3牛津译林版必修5Tag内容描述：
1、111Grammar: 动词不定式. 不定式句法功能1. 作主语：The cat said, “To take roller coaster” is terrible. 不定式短语作主语时，可以直接放在句首，但在很多情况下，尤其是在疑问句和感叹句中，往往放在谓语之后，而用先行代词it作形式主语。 The cat said, “Its terrible to take roller coaster.” How long did it take you to take roller coaster? How terrible it is to take roller coaster?不定式作主语常见句型：a) It is + adj. (easy, important, difficult) + 不定式b) It is + n. (a pity, a pleasure, ones duty, a sha。
2、111Unit 3 Science versus nature (Brief Teaching Plan)Grammar and usageTeaching objects:1. Learn the usage of verb-ed form and verb-ed phrases2. Learn the difference and usage of verb-ing and verb-ed as adjectivesTeaching procedures:Step I IntroductionVerb-ed form can be used like an adjective or an adverb in a sentence serving as(充当) attribute(定语), predicative(表语) and object complement(宾语补足语)When the verb-ed form is used as an attribute, it can be changed into an attributive。
3、111Unit 2 The environmentGrammarTeaching Aims1. Help Ss understand verbing form as an adjective or adverb2. Master a verb-ing as attributive, predicative, object complement ect.Teaching difficult points1. How to use verb-ing form as an adjective or adverb2. How to use verb-ing phrasesTeaching steps;Step1 Lead-in1. The children stopped_as the teacher came inA.talk B.to talk C.talking D.talked2. If he can stop them _there ,I will do it A.go B.to。