用"by the time"翻译他来这之前已经学了五年英语了

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He has learned English for five years by the time he came here.

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He had learned English for 5 years by the time he came here.
by the time 一散巧或般用过去完成冲伍时（常见）宽稿

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i have learn english for five years by the time

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