"Speak Engpsh well" 可以用两种英语表达：
"speak Engpsh fluently"
"have a good command of Engpsh"
"Speak Engpsh well" 的意思是说英语说得流利、熟练。"Speak Engpsh fluently" 强调说话流畅，"have a good command of Engpsh" 强调掌握得好。
两种表达的来源是来自于语言学和语言教育领域。
例句：
She speaks Engpsh fluently.
她的英语说得很流利。
He has a good command of Engpsh.
他的英语掌握得很好。