have a good command of后面一定要加语言吗

你好
have a good command of“精通; 能驾御，很会; 晓畅”
后面可以接语言,也可以接任何表示技术或知识的名词和名词短语,比如
John has a good command of
the English language
the law
the situation
the entire universe
economic theory
the broad spectrum of human expressions
等
希望对你有帮助

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