意思其實是一樣的,區(qū)別不大
細微的區(qū)別是have是現(xiàn)在完成時,表示“現(xiàn)在”已經(jīng)意識到,而did是過去時,表示過去工作時意識到.
Not until i began to work (did i realize) how much time i had wasted
Not until i began to work (did i realize) how much time i had wasted
為什么不用（have i realized） 它們之間有什么區(qū)別
為什么不用（have i realized） 它們之間有什么區(qū)別
英語人氣：893 ℃時間：2019-08-22 13:32:17
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