GbEng
我的日语相当差。 My knowledge of Japanese is rather poor.
她会说日语和英语。 She can speak Japanese as well as English.
我已经通过了日语的中级水平考试。 I've passed the intermediate level exam of Japanese.
他稍微会一点儿日语. He has some little acquaintance with the Japanese language.
他学习日语的兴趣逐渐消失了。 His interest in learning Japanese has petered out.