Since the 14th and 15th centuries,tjhe Diaoyu Islands ______
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Since the 14th and 15th centuries,tjhe Diaoyu Islands ________ in Chinese maps.
A.have been included B.had been included C.were included D.would be included
为什么选择A不是B呢
A.have been included B.had been included C.were included D.would be included
为什么选择A不是B呢
你好:Since the 14th and 15th centuries, the Diaoyu Islands have been included in Chinese maps.
自十四十五世纪以来,钓鱼岛一直就是中国的领土(在中国的地图上).
分析如下:
(1)先弄明白什么是过去完成时.过去完成时表示过去的过去,即有一个过去的时间点,在这个点之前的动作就用过去完成时.本句the Diaoyu Islands have been included in Chinese maps动作发生在前一个时间点的后面,所以用现在完成时.下面是一个过去完成时的例子,一般以时间状语从句的形式出现:Before I went home, he had finished his homework.
(2)常见的现在完成时的时间状语有:for+一段时间(如a week, a year等), before,already, since+时间点(如last week, 2010, the 15th century等),当然还有其他一些词.
希望对你有所帮助.
自十四十五世纪以来,钓鱼岛一直就是中国的领土(在中国的地图上).
分析如下:
(1)先弄明白什么是过去完成时.过去完成时表示过去的过去,即有一个过去的时间点,在这个点之前的动作就用过去完成时.本句the Diaoyu Islands have been included in Chinese maps动作发生在前一个时间点的后面,所以用现在完成时.下面是一个过去完成时的例子,一般以时间状语从句的形式出现:Before I went home, he had finished his homework.
(2)常见的现在完成时的时间状语有:for+一段时间(如a week, a year等), before,already, since+时间点(如last week, 2010, the 15th century等),当然还有其他一些词.
希望对你有所帮助.
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