Определение sentence adverb в Английский Язык Английский Язык словарь
An adverb that modifies an entire clause or sentence rather than a single word or phrase
Adverbs such as `fortunately' and `perhaps' which apply to the whole clause, rather than to part of it, are sometimes called sentence adverbs. An adverb or adverbial phrase that modifies an entire sentence, especially in establishing the attitude of the speaker or writer, as thankfully in Thankfully, there was enough for everyone. an adverb that relates to the whole sentence that contains it