表2．推荐的ＤＦＭＥＡ严重评价准则表4．推荐的ＤＦＭＥＡ探测度评价准则后果评定准则：后果的严重度严重度无警告的严重危害这是一种非常严重的失效形式，它是在没有任何失效预兆的情况下影响到行车安全或不符合政府的法规１０有警告的严重危害这是一种非常严重的失效形式，是在具有失效预兆的前提下所发生的，影响到行车安全和／或不符合政府的法规。９很高车辆／项目不能运行（丧失基本功能）８高车辆／项目可运行，但性能下...
频度副词练习题1.-DoesAliceoftenworkuntil2a.m.?-No,she________does.A.nearlyB.certainlyC.seldomD.alwaysD.usuallyD.Never2.–Ididn’tknowyoutakeabustoschool.-Oh,I______takeabus,butitissnowingtoday.A.hardlyB.neverC.sometimes3.-Wereyouoftenlateforschoollastterm,Tom?-No,_______.Igottoschoolearlyeveryday.A.AlwaysB.UsuallyC.Sometimes4.–Howoftendoyougotoaconcert?-_______ever.I’mnotinterestedinthatatall...
频度副词用法总结alwaysusuallyoftensometimeshardlyevernever这些都是频度副词,一、频度副词的概念与用法频度副词是指表示动作发生的次数副词,常见有的never,seldom,sometimes,frequently,often,usually,always等。*频度副词通常位于实义动词之前,动词be、助动词、情态动词等之后。如：Weoftengettogether.我们常常聚会。Janeusuallygoestoworkbybike.简通常骑自行车上班。Hesometimesgoesthereonbusiness.他有时到那里出差。H...
频度副词用法总结alwaysusuallyoftensometimeshardlyevernever这些都是频度副一、频度副词的概念与用法频度副词是指表示动作发生的次数副词,常见有的never,seldom,sometimes,frequently,often,usually,always等*频度副词通常位于实义动词之前,动词be、助动词、情态动词等之后。如：Weoftengettogether.我们常常聚会。Janeusuallygoestoworkbybike.简通常骑自行车上班。Hesometimesgoesthereonbusiness.他有时到那里出差。Hecann...
eg:IwillneverforgetthefirsttimeImet我2.Ican_____beanurse.I’mnotverypatientperson.3.Nowthetrainserviceisverygood.Thetrainsare______ontime.D.sometimes2NO,I_____.Igotoschoolearlyeveryday.A.alwaysB.usuallyC.sometimes讲解：汤姆,你经常迟到吗？那回答是不,那我们就可以排除面选项中表示否定的是never。D.neverA和B选项,表示否定在下5.____doeswanglindohishomework？-----fivetimesaweek.A.HowsoonB,howlongC.howma...
时间介词(at,in,on)的用法’clock,atdaybr）ea.k,atdawnChildreninChinastartschoolat6yearsold.’clockonthenightofthe5th.Ifthetrainshouldbeontime,Ishouldreachhomebeforedark.2）usually与always相比,表示的频率要低些,约为Plantsareusuallygreen.植物通常是绿色的。70%-80%。意思是通常。LiMingneverwearsdresses.李明从不穿裙子。seldomsometimesnever2often也可以放在句中也可D.still3科教兴国((()10Ithappenedtobevery...
时间介词(at,in,on)的用法’clock,atdaybr）ea.k,atdawnChildreninChinastartschoolat6yearsold.’clockonthenightofthe5th.Ifthetrainshouldbeontime,Ishouldreachhomebeforedark.22）usually与always相比,表示的频率要低些,约为Plantsareusuallygreen.植物通常是绿色的。70%-80%。意思是通常。LiMingneverwearsdresses.李明从不穿裙子。seldomsometimesnever3often也可以放在句中也可D.still4科教兴国((()10Ithappenedtobever...
often也可放在句末(一般不放在句首)。◆如果有两个助动词,频度副词通常放在第一个助动词后面。如Wehaveneverbeeninvitedtooneoftheirparties.Shemustsometimeshavewantedtorunaway.他们聚会,一次也没邀请过我们。她有时候一定想到过要逃走。2always与进行时连用时,Heisalwaysthinkingofothers.他总是想着别人。(赞叹)Weusuallygotoschoolatseveninthemorning.MymotherandIusuallygoshoppingonSundays.ItoftenrainshereinApril....
eg:IwillneverforgetthefirsttimeImetyou.我2.Ican_____beanurse.I’mnotverypatientperson.3.Nowthetrainserviceisverygood.Thetrainsare______ontime.D.sometimesNO,I_____.Igotoschoolearlyeveryday.A.alwaysB.usuallyC.sometimes讲解：汤姆,你经常迟到吗？那回答是不,那我们就可以排除面选项中表示否定的是never。D.neverA和B选项,表示否定在下5.____doeswanglindohishomework？-----fivetimesaweek.A.HowsoonB,howlongC.ho...
