用英文翻译(两个半小时以来我一直都在读书)

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用英文翻译(两个半小时以来我一直都在读书)
用英文翻译(两个半小时以来我一直都在读书)

用英文翻译(两个半小时以来我一直都在读书)
I have been reading since two and a half hours ago.
“一直都在读书”从过去到现在,还可能持续到将来,所以用“have been reading” 现在完成进行时.
“since”表示“以来”,后加一个过去的时间点.
也可用“for”,引导一段时间.

I have kept on reading for two and a half hours.
keep on:持续,继续,一直的意思

I have been reading for two and a half hours.

I have been reading for two and a half hours.

I am reading for two and a half hours.