he said hundreds of trees__in the amazon rainforest by the end of last yeara,have been cut downb,had been cut down是选择第二个吧,答案可能又错了,答案是第一个,我就是想和你们高手确认一下答案,嘻嘻,

来源：学生作业帮助网编辑：作业帮时间：2024/11/06 07:33:09

he said hundreds of trees__in the amazon rainforest by the end of last yeara,have been cut downb,had been cut down是选择第二个吧,答案可能又错了,答案是第一个,我就是想和你们高手确认一下答案,嘻嘻,
he said hundreds of trees__in the amazon rainforest by the end of last year
a,have been cut down
b,had been cut down
是选择第二个吧,答案可能又错了,答案是第一个,我就是想和你们高手确认一下答案,嘻嘻,

he said hundreds of trees__in the amazon rainforest by the end of last yeara,have been cut downb,had been cut down是选择第二个吧,答案可能又错了,答案是第一个,我就是想和你们高手确认一下答案,嘻嘻,
答案：B
句意：“在去年年底为止,亚马逊热带雨林中有数百颗树木被砍倒”,他说道.
1、by the end of last year 表示“在去年年底为止”,是过去时间,答案A用的是现在完成时,很明显错误.
2、答案B had + 过去分词这是过去完成时,过去完成时指的是“在过去某一时刻或者动作之前完成了的动作”,即动作发生的时间是在“过去的过去”.
3、cut down 这个动作在said之前就发生了,所以应该用过去完成时.所以答案B正解.

B,by the end of last year,直到去年底，是过去完成时，by+过去的时间，前面的动词为过去完成时

我认为是B
因为后面的时间是by the end of last year
可以判断是完成时，但是发生已经在过去了，当然要用过去完成时。没看懂你说的，答案是A或者是B，但我做的话，会选择B。看后面的时间点，这是我的解题思路
希望能帮到你，O(∩_∩)O~

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