时态结构,时间.ppt

: 1. 现阶段经常性****惯性动作; , 3. 客观真理. 结构: am / is / are work - works do — does watch-- watches play — plays carry — carries 常用时间状语: seldom, always, usually, often, never, every day, this year , on Monday, once a week, at noon, in the morning sometimes, now and then, at times, 例句: She goes to work by bus every day. The teacher said that the earth goes around the sun. We will go for a ic if it doesn ’ t rain tomorrow. ▲ as soon as, until, when, if 引导的从句中用一般现在时(主将从现) 特殊用法: ①在时间、条件状语从句中常用一般现在时代替将来时。 eg. If he accepts my invitation es to our party, my family will be pleased. When es here tomorrow, tell him about it. ②e 、 go 、 leave 、 arrive 、 fly、 return 、 start 、 begin 、 open 、 close 、 end 、 stop 等常用一般现在时代替将来时,表示一个按规定、计划或安排要发生的动作。 eg. The shop closes at 11:00 . every day. The train leaves at 8:00 .! Let ’ s hurry! : 表示过去某个时间发生的动作或状态. 结构: was / were work - worked dance--danced play — played carry — carried stop- stopped 常用时间状语: yesterday, last night/week …, six days ago, just now , finally, at last, in the end , two days later , after two days 例句: I couldn ’ t fall asleep last night. I used to get up late in the morning, but now I am used to getting up early. ▲ used to do sth 一般过去时的用法 :动词的一般过去时(注意动词的一般过去式的不规则变化) 一般过去时的被动语态: was/were done : ①在确定的过去时间里所发生的动作或存在的状态。常和表示过去的时间状语连用: yesterday, last night, at that time, once, a few days ago, just now, the other day 等。 eg: Where did you go just now? ②表示在过去一段时间内,经常性或****惯性的动作。 When I was a child, I often played football in the street. 现在完成时和一般过去时的区别 She has closed the window. ( 她已把窗户关上了,现在仍关着) She closed the window. ( 她关了窗户,窗户现在不一定关着) He worked in the hospital for 7 years. (现在不在那个医院了) He has worked in that hospital for 7 years. (现在仍在那里工作) ★现在完成时强调过去的动作对现在有影响;一般过去时只表示过去某个具体时间里发生的动作,与现在没有联系。★两者都可表示过去开始并延续了一段时间的动作,但现在完成时表示动作可能还要继续下去,而一般过去时则说明动作已经结束。 : 表示将来发生的动作或存在的状态. 结构: will do / be going to do I/ We shall do be doing (go,