Period 3 GrammarTeaching aims 1．Students will be able to recognize the infinitives and know the exact meanings of them.2．Students will be able to use these structures correctly.Teaching procedures Step 1 RevisionAsk several students to retell Marty's story. Show Marty's mini biography on the PowerPoint.My mini biographyNameMarty FieldingStatusHigh school studentHealthDeveloped a muscle disease at the age of 10，very weak，cannot do things like normal peopleInterests and Hobbies·Enjoying writing and computer programming·Going to the movies and football matches with friends·Spending a lot of time with my pets—two rabbits，a parrot，a tank full of fish and a tortoiseAmbitionTo work for a firm that develops computer softwareMottoLive one day at a timeStep 2 Discovering useful structures1．基本概念不定式是动词的一种非谓语形式，没有人称和数的变化，而且不能单独用作谓语，但仍旧有动词的特点，即可有自己的宾语和状语，构成不定式短语，使用频率较高。是一个考试经常考查的语法点。2．基本形式主动形式被动形式一般式to doto be done完成式to have doneto have been done进行式to be doing/完成进行式to have been doing/否定形式not to donot to be done疑问词＋不定式wh－ to dowh－ to be done复合结构sb.to do/for sb.to do/ 3.句法功能不定式具有名词、形容词、副词的特征，在句中可以充当主语、表语、宾语、定语、状语和补足语，还可以有自己的逻辑主语，即 for sb. to do sth.。It is good to_help_others.(subject)It is my ambition to_make_sure_that_the_disabled_people_in_our_neighbourhood_have_access_to_all_public_buildings.(subject)My ambition is_to_work_in the computer industry when I grow up.(predicative)I don't have time to_sit_around feeling sorry for myself.(attributive)I am the only student in my class to_have_a_pet_snake.(attributive)A big company has decided to_buy_it_from_me.(object)My fellow students have begun...
