Meanwhile,a number of university students have volunteered to drive buses while the strike lasts.在本句中have volunteered是不是现在完成时?如果是,为什么要在这儿用,而不用原型或过去式?表达了了现在完成时中哪个

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Meanwhile,anumberofuniversitystudentshavevolunteeredtodrivebuseswhilethestrikelasts.在本句中havevoluntee

Meanwhile,a number of university students have volunteered to drive buses while the strike lasts.在本句中have volunteered是不是现在完成时?如果是,为什么要在这儿用,而不用原型或过去式?表达了了现在完成时中哪个
Meanwhile,a number of university students have volunteered to drive buses while the strike lasts.
在本句中have volunteered是不是现在完成时?如果是,为什么要在这儿用,而不用原型或过去式?表达了了现在完成时中哪个意思?
我看现在完成时的语法讲解,主要是1持续,2完成,3经验,在这里表达的是哪种用法,为什么会这么用,不能用其它时态吗?

Meanwhile,a number of university students have volunteered to drive buses while the strike lasts.在本句中have volunteered是不是现在完成时?如果是,为什么要在这儿用,而不用原型或过去式?表达了了现在完成时中哪个
是的,此处使用的是现在完成时,表示动作已经发生在过去的某一时间,使用完成时是为了表示影响,该用法的现在完成时表示一个过去发生的动作在过去已经完成,并且这个过去发生并完成的动作对现在有影响或结果,同时说话者强调的或感兴趣的就是这个影响或结果.

是的,此处使用的是现在完成时,表示动作已经发生在过去的某一时间,使用完成时是为了表示影响,该用法的现在完成时表示一个过去发生的动作在过去已经完成,并且这个过去发生并完成的动作对现在有影响或结果,同时说话者强调的或感兴趣的就是这个影响或结果。...

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是的,此处使用的是现在完成时,表示动作已经发生在过去的某一时间,使用完成时是为了表示影响,该用法的现在完成时表示一个过去发生的动作在过去已经完成,并且这个过去发生并完成的动作对现在有影响或结果,同时说话者强调的或感兴趣的就是这个影响或结果。

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一段英文翻译成中文:There is an oversupply of PhDs.Although a doctorate is designed as training for a job in academia,the number of PhD positions is unrelated to the number of job openings.Meanwhile,business leaders complain about shortages o Meanwhile, a number of university students have volunteered to drive buses while the strike lasts.while the strike lasts这个句子为什么用一般现在时 请英语大神帮我看下这句话有什么语法错误!Meanwhile,there emerged a trend that a considerable number of people,especially the educationalists and the sociologists are pouring their due attentions to this heated issue of how should par 1.Today,we’ll discuss a number of cases_________beginners of English fail to use the language properly.A.which Bas Cwhy Dwhere2.Meanwhile you have to prepare the next question_________on what the person says.Adepended Bdepending Cto depend Ddepends 一道英语单项选择题Listen and number the words_____you hear them. A.as B.while C.when D.meanwhile为什么选C呢?为什么不选B呢?B不也是当……时吗?给我讲一下 Meanwhile,a number of university students have volunteered to drive buses while the strike lasts.在本句中have volunteered是不是现在完成时?如果是,为什么要在这儿用,而不用原型或过去式?表达了了现在完成时中哪个 The train will come in an hour;____we can have lunch.A during which B meanwhile C for the meanwhile如果把;改为两个,可以选meanwhile吗? a number The train will come in an hour ____we can have lunch.A during which B meanwhile C for the meanwhile ___student in our city ride to school every day A.Number of B.A number C.A number of D Anumbers o 数学应用题(英文的)Can you guess this number? The number is not an odd number.o It has exactly four factors.o If you reverse the digits,a prime number is formed.o The sum of the digits is a two digit prime number.o The number is less t meanwhile是什么意思? meanwhile 同义词 英语 meanwhileI see that a car hit the other car meanwhile third car hit one in a rain day.1.meanwhile用在这句话对吗?2.that 从句用法对吗?给个用meanwhile 的句子。 谁能帮我改一下英语作文,急!句酷网说我有两个动词错误,四个句子错误,但是找不出来,求帮助. It's common that a growing number of people prefer travelling to staying at home.Meanwhile,environment problems have become th the number of,a small number of,a number of. the number of、a number of、large number的区别 a number of the number of