玛丽在给她的父母写信 write to
给父母写信
Write a letter to parents
以上为机器翻译结果，长、整句建议使用 人工翻译 。
他没有信守定期给父母写信的诺言。
He hasn't kept his promise to write to his parents regularly.
youdao
她一边看电视，一边给父母写信。
She combined watching television with writing to her parents.
现在他并没有给父母写信。
He isn't writing to his parents now.
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