动词不定式

U1L2 An Interview with a Good Language LearnerGrammar1不定式的结构：不定式的结构：2.找出课文中的不定式：找出课文中的不定式：The Infinitive 不定式不定式预习：预习：肯定肯定：（to）do 否定：否定：not（to）do 1)Please tell us what youve done to develop your English skills.3)Its very important to take every opportunity to practise speaking English in and out of class.4)I keep it to develop my writing skills.5)And I like to read English stories and newspapers.2)My way is to keep practising.6)What do you want to be when you grow up,Li Fang?7)My dream is either to be a diplomat or to be a teacher of English.状语状语表语表语主语主语状语状语宾语宾语宾语宾语表语表语The infinitive as subject,object,predicative and adverbial:1.To provide students with a good language environment is important.2.To take part in the English Evening was enjoyable and rewarding.It is important to provide students with a good language environment.It was enjoyable and rewarding to take part in the English Evening.动词不定式作主语，常用动词不定式作主语，常用it it 作作形式主语形式主语，真正的主语放在句末，真正的主语放在句末结构：结构：It be a.for sb.to do sth.of动词不定式作主语(the infinitive as subject)1.Li Fang hopes to become a diplomat when she grows up.动词不定式作宾语在在would like,want,wish,hope,decide,plan,expect等表示命令，等表示命令，打算，希望的动词后，用动词不定式作宾语打算，希望的动词后，用动词不定式作宾语2.I found it good to read English every day.在在find和和think 后跟不定式作宾语时，常用后跟不定式作宾语时，常用itit作形式宾语，真正的作形式宾语，真正的宾语放后面宾语放后面3.Why not finish your homework first?有些动词后面用省略有些动词后面用省略toto的不定式，例如：的不定式，例如：Why not do?had better(not)do.would rather do will you please do?(the infinitive as object)动词不定式作表语1.My dream is to be a scientist when I grow up.2.Li Fangs weekend plan is to go to the English Corner at Peoples Park.动词不定式作表语和名词形容词一样，放在动词不定式作表语和名词形容词一样，放在bebe动词后面动词后面(the infinitive as predicative)4动词不定式作状语1.To improve her listening skills,Li Fang often watches English TV programmes.2.Li Fang often reads English stories and newspapers in order to improve her reading skills.动词不定式作状语，其逻辑主语要和主语一致动词不定式作状语，其逻辑主语要和主语一致(the infinitive as adverbial)Find the functions in the following sentences:1.I plan to take a summer English course.2.My plan is to take a summer English course.3.I wish to win first prize in the next speech contest.4.My wish is to win first prize in the next speech contest.5.It is necessary to watch English TV programmes.6.He got up early in order not to miss the plane.O 宾语宾语P表语表语O宾语宾语P表语表语S主语主语A状语状语1.To go on a study trip abroad is interesting.(保持原句意思)_ _ to go on a study trip abroad.2.Mr.Black is so strong that he can move this heavy box.(改为简单句)Mr.Black is _ _ to move this heavy box.3.Liz goes to a dentist to have a check-up on teeth every six months.(对划线部分提问)_ _ Liz go to a dentist every six month?4.You should memorize your password(密码).Its very important.(合并为一句)Its very important _ you _ memorize your password.5.The bookshelf is so high that the boy cant reach the top of it.（保持原句意思）The bookshelf is _ high for the boy _ reach the top.6.I havent decided which ferry I shall take to Hong Kong Island.(保持原句意思)I havent decided which ferry _ _ to Hong Kong Island.Its interestingstrong enoughWhy doesfor totoo toto takePair-work:p15Model 1:A:Whats your dream job?B:My dream job is either to be a diplomat or to be a policeman.What about you?A:I want to be a writer.Model 2:A:Is it helpful to go to the English Corner?B:Yes,in order to practise English,its very helpful to do so.