he _____ research these three years,and he ___several discoveries this year.a.has been doing ,made b.has been doing ,has made.能否说明原因?

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he _____ research these three years,and he ___several discoveries this year.a.has been doing ,made b.has been doing ,has made.能否说明原因?
he _____ research these three years,and he ___several discoveries this year.
a.has been doing ,made b.has been doing ,has made.
能否说明原因?

he _____ research these three years,and he ___several discoveries this year.a.has been doing ,made b.has been doing ,has made.能否说明原因?
A,这三年来他一直做研究,这一年有了几个发现

均可

B

B 第一个现在完成进行时表示一直在进行的动作,只强调动作不表示结果,后面的several discoveries就表示结果,所以用现在完成时

B可是资料上的答案是A我个人觉得B比较妥当,他这三年来一直在做研究,今年他终于做出了几个重大发现。他三年的研究对他后来的发现产生了重大影响,所以用现在完成时比较合适。我个人也是倾向B,可是分析下A似乎也没错。确实,made也可以,不强调前面对后面的影响,只是单纯说他今年他做出了重大发现,也可以用made.我倒觉得made,也未尝不可,看你自己理解吧~~是啊。这题目出的真让人发昏啊。谢谢啦啊!...

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B

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a

A 现在完成进行时表示一直在进行的动作,他这三年来一直在做研究,
第二空现在完成时强调对现在的影响或结果,一般过去时有动作发生的时间点,即过去某一时间发生某一动作;现在完成时则没有,即不强调是哪个时间点发生的动作,而强调过去的动作对现在造成的影响和结果。...

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A 现在完成进行时表示一直在进行的动作,他这三年来一直在做研究,
第二空现在完成时强调对现在的影响或结果,一般过去时有动作发生的时间点,即过去某一时间发生某一动作;现在完成时则没有,即不强调是哪个时间点发生的动作,而强调过去的动作对现在造成的影响和结果。

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He was born _____ December 10th. He was _____ on january 27th ,1756,in Austria. 英语翻译As a scientist,he has nerver given up his research on pandas,so he _____ _____ succeed. 帮我解一下题目:1.He did a lot of medical research _____ cancer 3.I was born on February 5th.(提问) _____ _______ you _______ 4.He was born in shanghai._____ he _____ research these three years,and he ___several discoveries this year.a.has been doing ,made b.has been doing ,has made.能否说明原因? He is going to Beijing for vacation [ on 14th.]对画线部分提问_____ _____ he going to Beijing for about,research,he,but,his,cares,nothing research Research research He was a fomous artist in _____. A the 19th Century B the 19 Century C 19 Century 其实我已经知道这个句子的意思了,但是既然是这样,那为什么不填everything but 而是填 anything butAlone in a deserted house,he was so busy with his research work that he felt _____ lonely. 英语翻译i recently heard a story about a famous research scientist who had made several very important mmedical breakthroughs.He was being interviewed by a newspaper reporter who asked him why he thought he was able to be so much more creative th 英语翻译一、句型转换1.It is possible that aliens have taken the boy away to research on him____ ____ _____that aliens have taken the boy away to do research on him.2.On finishing his studies,he went abroad.____ _____ ___his studies,he … I was born on February 5th.(提问) _____ _______ you _______ 4.He was born in shanghai._____ ______ he _______ 5.My cousin Annie comes from the USA.______ ______ your cousin Annie ______ _______ when it was,it was when--what did he want to know,anna?-- _____ I could finish writing th ereport.答案when it was that He gives his money to the ____(science) research.