говорит не только по-английски, но

speaks not only English, but also

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phrase Rare #42,940
speaks not only English, but also Usually followed by и or ещё и and another language or activity. По-английски means “in English” or simply “English” when describing what someone speaks.
RU: Моя сестра говорит не только по-английски, но и по-испански.
EN: My sister speaks not only English, but also Spanish.