在外媒看到这样一句话:China's yuan is the strongest it's been in three years. 请问it's been 是什么语法成分?
China's yuan is the strongest it's been in three years.
it’s been = it has been,为定语从句,修饰 strongest(它在此用作名词,也可视为其后省略了名词 currency),其前省略了关系代词 that(用作表语)。又如:
These figures provide confirmation that inflation is the lowest it has been for ten years. 这些数字证实,通货膨胀率达到了10 年来的最低点。
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