他经常给我写信
He often writes to me
以上为机器翻译结果，长、整句建议使用 人工翻译 。
自从我病愈以来，他经常给我写信。
He has written to me frequently since I was ill.
youdao
自我病愈以来他经常给我写信。
He's often written to me since I was ill.
他经常给我写信。
He writes to me often.
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