一道关于英语时态的题目The first use of atomic weapons was in 1945,and their power _______ increased enormously ever since为什么填的是has been而不是had been,不是要时态一致吗?

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一道关于英语时态的题目The first use of atomic weapons was in 1945,and their power _______ increased enormously ever since为什么填的是has been而不是had been,不是要时态一致吗?

一道关于英语时态的题目The first use of atomic weapons was in 1945,and their power _______ increased enormously ever since为什么填的是has been而不是had been,不是要时态一致吗?
一道关于英语时态的题目
The first use of atomic weapons was in 1945,and their power _______ increased enormously ever since
为什么填的是has been而不是had been,不是要时态一致吗?

一道关于英语时态的题目The first use of atomic weapons was in 1945,and their power _______ increased enormously ever since为什么填的是has been而不是had been,不是要时态一致吗?
因为巨大的增长是从那个时候就开始了并且一直持续到现在,对于现在还有影响,所以是has been.
如果是had been 则这个动作必须已经停止了

ever since 是现在完成时的标志词 如so far all one's life 等等一样

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