重难点知识讲解部分完成时二

现在完成时讲解(二）

延续性与非延续性动词延续性动词动作,所以可以与段间连用；非延续性动词通常，也就是我们常说的短暂性动词，所以就不能与段时间连用。可以持续不可以持续常见的非延续性动词如下：come/go/arrive/reach/gettobein+地点（名词）join--bein+团体或bea+成员buy--haveborrow--keepreturn--bebackdie--bedeadbegin/start--beonleave--beaway（from)finish--beoveropen--beopenclose--beclosed都是形容词形容词半系动词要变成系动词fallasleep--beasleepe--bestayinbed--beinbedgetmarried--bemarriedbe

1.Theyhavegotmarriedsince2yearsago.2.Thebabyhasfallenasleep

forhalfanhour.

Theyhavebeenmarriedsince2yearsago.Thebabyhasbeenasleepforhalfanhour.

金睛火眼找问题3.Hehasstayedinbedforawholeday.4.MoYanhasepopularforyears.5.Thefactoryhasbeenopenedformanyyears.Hehasbeeninbedforawholeday.MoYanhasbeenpopularforyears.Thefactoryhasbeenopenformanyyears.非延续性动词的用法非延续性动词的只能与短暂性点时间连用。如1.

ShewenttoHongkonglastweek.2.HejoinedtheLeague3yearsago.

当非延续性动词与段时间相遇必须做出相应的处理A用延续性动词替换B套用公式It's/hasbeen+短时间since+过去起点=短时间haspassedsince+过去起点

以上两题变换如下

：1.HehasbeeninHongkongfora

week.It's/hasbeenaweeksincelastweek.Aweekhaspassedsincelastweek.

2.HehasbeenintheLeaguefor3years.或Hehasbeenaleaguememberfor3years.It's/hasbeen4yearssincetheoldmandied.Fouryearshaspassedsincetheoldmandied.3.Theoldmandied4yearsago.(点时间)Theoldman____________for4years.4.Iboughtthebook5daysago.

5.Thetrainhasleft10minutesago.

hasbeendeadFouryearshaspassedsincetheoldmandied.Ihavehadthebookfor5days.FivedayshaspassedsinceIboughtthebook.Thetrainhasbeenawayfor10minutes.Itis/hasbeen10minutessincethetrainleft.Tenminuteshaspassedsincethetrainleft.检测一下大家for和since的运用————threeyears————sixyearsago_______lastweek______