【一般过去时ppt】关于初二英语时态的课件:一般过去时一般现在时将来...

【一般过去时ppt】关于初二英语时态的课件:一般过去时一般现在时将来...

【答案】 一般现在时、现在进行时和将来时语法小结
　　一般现在时的用法
　　1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用.
　　时间状语：every…,sometimes,at…,on Sunday
　　I leave home for school at 7 every morning.
　　2) 客观真理,客观存在,科学事实.
　　The earth moves around the sun.
　　Shanghai lies in the east of China.
　　3) 表示格言或警句中.
　　Pride goes before a fall.骄者必败.
　　注意：此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时.
　　例：Columbus proved that the earth is round..
　　4) 现在时刻的状态、能力、性格、个性.
　　I don‘t want so much.
　　Ann Wang writes good English but does not speak well.
　　比较：Now I put the sugar in the cup.
　　I am doing my homework now.
　　第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作.再如：Now watch me,I switch on the current and stand back.第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时.
　　一般将来时
　　1) shall用于第一人称,常被will 所代替.
　　will 在陈述句中用于各人称,在争求意见时常用于第二人称.
　　Which paragraph shall I read first.
　　Will you be at home at seven this evening?
　　2) be going to +不定式,表示将来.
　　a.主语的意图,即将做某事.
　　What are you going to do tomorrow?
　　b.计划,安排要发生的事.
　　The play is going to be produced next month.
　　c.有迹象要发生的事
　　Look at the dark clouds,there is going to be a storm.
　　3) be +不定式表将来,按计划或正式安排将发生的事.
　　We are to discuss the report next Saturday.
　　4) be about to +不定式,意为马上做某事.
　　He is about to leave for Beijing.
　　注意：be about to 不能与tomorrow,next week 等表示明确将来时的时间状语连用.
　　be going to / will
　　用于条件句时,be going to 表将来
　　will 表意愿
　　If you are going to make a journey,you‘d better get ready for it as soon as possible.
　　Now if you will take off your clothes,we will fit the new clothes on you in front of the mirror.
　　be to和be going to
　　be to 表示客观安排或受人指示而做某事.
　　be going to 表示主观的打算或计划.
　　I am to play football tomorrow afternoon.(客观安排)
　　I‘m going to play football tomorrow afternoon.(主观安排)
　　一般现在时表将来
　　1）下列动词：come,go,arrive,leave,start,begin,return的一般现在时表将来.这主要用来表示在时间上已确定或安排好的事情.
　　The train leaves at six tomorrow morning.
　　When does the bus star?It stars in ten minutes.
　　2）倒装句,表示动作正在进行,如：
　　Here comes the bus.= The bus is coming.
　　There goes the bell.= The bell is ringing.
　　3）在时间或条件句中.
　　When Bill comes (不是will come),ask him to wait for me.
　　I‘ll write to you as soon as I arrive there.
　　4）在动词hope,take care that,make sure that等后.
　　I hope they have a nice time next week.
　　Make sure that the windows are closed before you leave the room.
　　用现在进行时表示将来
　　意为：意图、打算、安排、常用于人.常用词为 come,go,start,arrive,leave,stay等.
　　I‘m leaving tomorrow.
　　Are you staying here till next week?
　　什么是现在进行时?
　　现在进行时就是表示现在（说话瞬间）正在进行或发生的动作.例如：
　　I'm doing my homework now.我正在做家庭作业.
　　现在进行时的谓语表达形式是什么?
　　现在进行时的谓语表达形式是：系动词be+动词的现在分词（动词原形+ing）.（现在分词的构成形式在课本第180页.）例如：
　　I am playing basketball now.我现在正在打篮球.
　　现在进行时的时间状语有哪些?
　　现在进行时的时间状语主要有now；另外,如果句中出现Look!或listen!也可以判断此句可能会用现在进行时.例如：
　　1． Now she is having breakfast.现在她正在吃早饭.
　　2． Listen!Someone is singing over there.听!有人在那边唱歌.
　　时间状语
　　一般现在时 every …,sometimes,at …,on Sunday,
　　一般过去时 yesterday,last week,an hour ago,the other day,in 1982,just now
　　一般将来时 next…,tomorrow,in+时间,
　　现在完成时 for,since,so far,ever,never,just,yet,till/until,up to now,in past years,always,recently
　　过去完成时 before,by,until,when,after,once,as soon as
　　过去进行时 this morning,the whole morning,all day,yesterday,from nine to ten last evening… when,while
　　将来进行时 soon,tomorrow,this evening,on Sunday,by this time,tomorrow,in two days,tomorrow evening

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