延续性动词和非延续性动词.ppt

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. 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 years. （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 out be out close be closed open be open get to/arrive/reach be (in) die be dead,leave be away finish be over fall sleep be asleep join be in/be a member of become be make friends be friends come/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）,