时态讲解课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,初中英语动词时态讲解,Go for it!,九年级,动词的构成,be,动词,助动词,情态动词,系动词,实义动词,be,动词,be,动词的几种形式,am is are,was were,being,Been,be,动词的用法,与名词、数词、形容词、介词连用,I am a doctor.,He is ten.,They are tired.,The cat is under the table.,be,动词的用法,There be,句型,用于不可数名词和可数名词单数之前,There is a pen on the desk.,There is some water in the glass.,用于复数名词之前,There are some sheep in the hill.,用于一般将来时,There is going to be a film in our school next Sunday.,用于一般过去时,There was a book on the desk yesterday.,注意：请根据时态和句中的名词选择适当形式。,be,动词的用法,Be,动词在时态中的运用,在现在进行时中,We are talking.,在,过去进行时中,We were talking at this time yesterday.,助动词,助动词的几种形式,do /dont,Does/ doesnt,Did/ didnt,will /wont,have havent /has hasnt/had hadnt,助动词的用法,对句子进行否定和疑问,Do you get up early every day?,I didnt have lunch yesterday.,Will you be back soon?,He hasnt finished the work yet.,在,反意疑问句中,He works in a school, doesnt he?,She has never been there,has she?,在,倒装句中,They helped the farmers , so did we.,I wont visit the famous singer,neither will he.,情态动词,共同特点,情态动词后面跟动词原型,无论否定、疑问、倒装句、或反意疑问句都用情态动词,只有时态变化，没有人称变化,情态动词,解释,can / could,在表示请求允许的时候两者和互换，,could,比,can,语气更委婉。,Can I help you?,Could you open the window?,在表示有能力作某事时，,could,是,can,的过去式。,I can swim.,I could swim at the age of five.,情态动词,解释,Must /have to,Must,表示主观意愿，否定句用,Mustnt,，,否定回答用,neednt,I must go now.,You mustnt play in the street.,Must I clean the room now?,No,you neednt.,have to,表示客观条件的限制的“不得不”，它有时态和人称变化，需要助动词来否定和疑问。,I dont have to carry the big box.,He had to wash his clothes.,情态动词,解释,May,表示请求别人允许。,May I use your bike?,表示可能性。,He may be a teacher.,He may live in this building.,系动词,我们所学过的系动词是,Get,，,turn,，,be come,，,be,动词,感观动词,look,，,sound,，,smell,，,taste,，,feel,系动词只和形容词连用，构成系表结构,I feel hungry.,The day gets longer and longer.,He looked happy.,实义动词,实义动词指的是有具体行为意思的动词。,实义动词在句中可以做谓语动词和非谓语动词。,做谓语动词的用法,动词会有四种形式：单三，现在分词，过去式，过去分词,实义动词,注意：掌握四种形式的变化规律,He works in the office.,We are dancing together.,I caught a cold last week.,She has watered the flower.,实义动词,做非谓语动词的用法（指出现在谓语动词之后的动词，它受前面谓语动词的限制）,动词会有三种形式：,原型,(do),动名词,(doing),不定式,(to do),实义动词,用原型：,let,sb.do,make,sb.do,help,sb.(to)do,had better do,实义动词,用动名词：,like doing,enjoy doing,finish doing,介词之后用动名词,be good at doing,what about doing,thank you for doing,实义动词,用不定式：,want to do,decide to do,plan to do,would like to do,learn to do,tell,sb,.( not)to do,ask,sb.(not,) to do,实义动词,注意下列词不同形式的不同用法,:,remember doing/to do,forget doing/to do,stop doing/to do,go on doing/to do,时态,一般现在时,一般将来时,一般过去时,现在进行时,现在完成时,过去进行时,过去将来时,过去完成时,一般现在时,表示一般情况和经常发生的动作。,时间状语为,every day,或,every,引导的时间状语,often,，,always,，,usually,一般现在时,动词碰到第三人称单数时，要加 “,s”,work - works,辅音字母和“,y”,结尾的词，如,carry - carries,以,s,、,x,、,ch,、,sh,结尾的加“,es,”,，如,wash - washes,go - goes,do - does,have - has,一般现在时,例句,He goes to school on foot every day.,We often have supper at home.,She doesnt do her work every Sunday.,现在进行时,表示正在发生的动作。,时间状语：,now /Look /Listen,由,be,动词动词,ing,构成,动词变化加,ing,clean - cleaning,以不发音“,e”,结尾的，去掉字母“,e”,，,再加,ing,make - making,重读闭音节的单词，双写最后一个字母，再加,ing,swim - swimming,现在进行时,例句,The boys are playing now.,Look! They are planting trees.,Listen! He is singing.,一般将来时,表示将来发生的动作。,时间状语：,next,引导的词组,tomorrow,引导的词组,the day after tomorrow,动词变化：,will +,动词原型,例句,I will visit you tomorrow.,He wont come back next week.,一般过去时,指,过去发生的动作或事情,时间状语：,yesterday,引导的词组,ago,引导的词组,last,引导的词组,the day before yesterday,一般过去时,动词变化：动词变成过去式，动词加“,ed”,Play - played,辅音字母和“,y”,结尾的词，如,carry - carried,重读闭音节的单词，双写最后一个字母，再加,ed,stop - stopped,不规则动词见书后动词表,一般过去时,例句,He bought a book yesterday.,I watched a match last week.,He left here two days ago.,现在完成时,动词变化 动词变成过去分词加,ed,Play - played,辅音字母和“,y”,结尾的词，如,carry - carried,重读闭音节的单词，双写最后一个字母，再加,ed,stop - stopped,不规则动词见书后动词表,动词由,have,（,has,）,+,过去分词 构成,现在完成时,表示动作已经完成,He has left .,I have already had a rest.,表示动作不仅已经完成，还要持续（在这个用法当中，动词要用延续性动词，与,for,引导的一段时间和,since,引导的短语连用）,He has been away for two days.,I have already taught in this school since 1990.,The bird has been dead for a month.,We have made lots of friends since we came here.,过去进行时,指在,过去的某一个时间正在发生的动作。,时间状语,at this time yesterday,at five oclock yesterday afternoon,动词由,be,动词,+,动词,ing,形式构成,例句,He was watching TV at this time yesterday.,过去将来时,指,对过去的某一个时间来讲，将要发生的动作。,动词由,would+,动词原型构成。,例句,He would go to the park the next day.,He said he would work hard next term.,过去完成时,指对过去的某一个时间来讲，已经发生的动作。,动词由,had+,过去分词构成。,例句,she had borrowed a book before she went to the park.,We had learned many new words by the end of last term.,