VERBS | ADVERB | PREPOSITION | PHRASESVERBS➤be, seem頻繁;似乎很頻繁▸➤become變得頻繁◇The attacks have become increasingly frequent.襲擊變得越來越頻繁。ADVERB➤extremely, fairly, very, etc.極度/相當/非常頻繁▸➤increasingly越來越頻繁▸➤relatively相對頻繁◇She was a relatively frequent visitor to the house.她算是這家的常客。PREPOSITION➤among, in在⋯中常見◇Coughs and colds are frequent among young children.小孩子常患咳嗽和感冒。PHRASES➤at frequent intervals頻繁地◇She called her family at frequent intervals.她頻繁地打電話回家。