He didn't speak anything but Greek... 他只会说希腊语。
The crew of the ship gave them nothing but bread to eat. 船上的工作人员除了面包什么也不给他们吃。

I don't take any drugs whatsoever, except aspirin for colds... 我什么药都不吃，除了感冒时吃阿司匹林。

everybody please advise.

idiomatic
/ˌɪdɪəˈmætɪk; ˌɪdɪə`mætɪk/
adj
(a) in accordance with the particular nature or structure of a language, dialect, etc 符合某一语言或方言等的习惯或特点的
*She speaks fluent and idiomatic French. 她说得一口又流利又地道的法语.

她讲一口流利地道的英语。

She speaks fluent and idio^matic english.

Practice makes perfect