在这种情况下,可以说 "She pkes to speak Engpsh quietly." 或 "She prefers to speak Engpsh quietly."

"Quietly" 这个词的意思是 "安静地",来自英文 quiet 的副词形式。

例句:

"She always speaks Engpsh quietly, even when she's excited about something." (她总是很安静地说英语,即使她对某事感到兴奋。)
"I could tell that she was nervous, but she spoke Engpsh quietly and confidently." (我能感觉到她很紧张,但她说英语时很安静而自信。)