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英语语法填空I fixed my eyes upon the newcomer,wondering whether I_

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英语语法填空
I fixed my eyes upon the newcomer,wondering whether I______(see) him sonewhere before.
-Oh,god!What did you do to my report,Tom?
-Terribly sorry.My mind __________(wander) and I will type it again for you.
China _____(establish) oner 300 Confucius Institutes in more than 90 countries and areas to teach Chinese and promote CHinese culture in the past fice years.
He is a man of few words,and seldom speaks until______(speak) to.
都是和时态语态有关的
英语语法填空I fixed my eyes upon the newcomer,wondering whether I_
I fixed my eyes upon the newcomer,wondering whether I___had seen___(see) him sonewhere before.
-Oh,god!What did you do to my report,Tom?
-Terribly sorry.My mind ____was wandering______(wander) and I will type it again for you.
China _has established____(establish) oner 300 Confucius Institutes in more than 90 countries and areas to teach Chinese and promote CHinese culture in the past fice years.
He is a man of few words,and seldom speaks until_spoken_____(speak) to.
再问: 答案都对,请问为什么呢?
再答: 根据上下文意思和动词之间的关系分析,就应该这样填。
再问: 比如孔夫子那个为什么不用has been establishing呢?动作在延续啊,以后还要建啊。最后一个为什么不加been?
再答: 因为这句话的意思是过去五年中已经建成了300多孔子学院,强调完成了,所以完成时合适。现在完成进行时是仍在进行的,而这里是已经建成了。