All employees will refer to each other by the honorific suffix "san".
所有雇员相互称呼时都须在名字后添加敬语san（日语表示“先生”，“女士”）。
He is quite at home with the Japanese language.
他对日语很熟悉.
He doesn't speak much Japanese but he can make himself understood.
他日语说得不太好,但尚能表达清楚自己的意思.
Many Chinese idioms have infiltrated into the Japanese language.
许多中国成语浸透到日语中.
He began to learn Japanese three years ago.
3年前他开始学日语.
Her familiarity with Japanese surprised me.
她对日语的熟谙使我惊奇.
She has a passable knowledge of Japanese.
她的日语(知识)还可以.
Japanese has borrowed heavily from English.
日语借用了很多英语词汇.
Japanese differs greatly from French in pronunciation.
日语发音和法语大不相同.
There is a shortage of well qualified teachers of foreign languages, especially of French and Japanese.
合格的外语教师还很缺乏, 尤其是教法语和日语的.
Most of the students of our class take Japanese as an elective course.
我们班大部分同学选修日语.
Not only did he speak English well, but he spoke Japanese more easily.
他岂但英语说得好, 就连日语也讲得满轻松自如.
My mother speaks very good English, but she knows little Japanese.
我母亲讲英语讲得非常棒, 但她不懂日语.
I can speak Japanese fluently.
我的日语很流利.
Starting from today, we'll study Japanese in a spare time school for workers.
从今天起, 我们要在工人业余学校学日语.