“He had already posted the letter by five yesterday.”为什么要用介词
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“He had already posted the letter by five yesterday.”为什么要用介词"by"?
这是一道选择题:选项有A.on B.at C.by D.for
我选择的是B,却不知道错误原因,希望告知!
这是一道选择题:选项有A.on B.at C.by D.for
我选择的是B,却不知道错误原因,希望告知!
![“He had already posted the letter by five yesterday.”为什么要用介词](/uploads/image/z/29239-7-9.jpg?t=%E2%80%9CHe+had+already+posted+the+letter+by+five+yesterday.%E2%80%9D%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E7%94%A8%E4%BB%8B%E8%AF%8D)
y表示在……时间之前,通常与完成时连用.
完成时除非加BY否则不加具体时间.如果你用AT就不能跟完成时连用了.
随便买本词语辨析,这里介词的用法中考中可是很重要的.
完成时除非加BY否则不加具体时间.如果你用AT就不能跟完成时连用了.
随便买本词语辨析,这里介词的用法中考中可是很重要的.
“He had already posted the letter by five yesterday.”为什么要用介词
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