have been busy fighting drought中有两个语法点：
首先,你需要知道固定搭配be busy doing something ,意思是“忙于做某事”；
然后,have done是现在完成时,表示从过去一直做到现在,而现在的状态是已经完成了这件事情.
望采纳.
all these last few days,we have been busy fighting drought.
all these last few days,we have been busy fighting drought.
为什么要用have been busy fighting ,请详解,
为什么要用have been busy fighting ,请详解,
英语人气：990 ℃时间：2020-03-13 03:05:51
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