He will be a writer one day. (some day.)

总有一天他会成为作家的。

youdao

Tom said, "Some day(One day), I'll visit Shanghai again."

汤姆说：“将来有一天，我还会再次访问上海。”

youdao

Tom said, "Some day(One day), I'll visit Shanghai again."

汤姆说：“将来有一天，我还会再次访问上海。”

youdao