延续性动词和非延续性动词.ppt

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1、观察并说出两列动词有什么区别,观察并说出这两种动词在用法上面的区别。,1.He has lived here for a long time.2.You can keep the book for 5 days.3.I have been a teacher since 2013.4.How long did you stay there last year?延续性动词与表示时间段的时间状语连用。He died 5 years ago.I joined the Youth League in 2014.Her mother bought the scarf for her last year.

2、Lucy got up at 5 oclock this morning.非延续性动词与表示时间点的时间状语连用。,1.He hasnt left here since 1987.1987年开始他就没有离开过这里。2.She hasnt heard from her son for 6 weeks.她有六周没有收到她儿子的来信了。非延续性动词的否定形式也可以与表示一段时间的时间状语连用,如果语境中有了表示一段时间的状语，同时又涉及非延续性动词，可以采用以下四种方法进行正确的表达。一、将语境中的非延续性动词转换为相应的延续性动词。如：1.他已经死了五年了。He has died for 5 ye

3、ars.（误）He has been dead for 5 years.（正）2.李晨来这已经四天了。Li Chen has come here for 4 days.（误）Li Chen has been here for 4 days.（正）,非延续性动词与延续性动词的转换1.转换为相应的延续性动词，用于现在完成时。borrow keep buy have put on wear catch a cold have a cold get to know know get to sleep sleep,2.转化为“be+形容词/副词/介词/名词”begin/start be on go ou

4、t be out close be closed open be open get to/arrive/reach be(in)die be dead,leave be away finish be overfall sleep be asleep join be in/be a member of become be make friends be friendscome/go/be+相应的介词短语,二、将句中表示“一段时间”的状语改为表示过去确定时间的状语1.他已经死了五年了。He has died for 5 years.（误）He died 5 years ago.（正）2.李晨来这已

5、经四天了。Li Chen has come here for 4 days.（误）Li Chen came here 4 days ago.（正）,三、用句型“It is+段时间+since”表达原意，,1.他已经死了五年了。He has died for 5 years.（误）It is 5 years since he died.（正）2.李晨来这已经四天了。Li Chen has come here for 4 days.（误）It is 4 days since Li Chen came here.（正）,四、用句型“时间+has passed+since 表达原意,1.他已经死了五年了。He has died for 5 years.（误）Five years has passed since he died.（正）2.李晨来这已经四天了。Li Chen has come here for 4 days.（误）Four days has passed since Li Chen came here.（正）,