ADJECTIVE | VERB + ONSET | PREPOSITIONADJECTIVE➤rapid, sudden迅速的/突然的開始◇the sudden onset of the disease疾病的突然發作➤acute (medical醫學) 急性發作◇Symptoms include the acute onset of pain.症狀包括疼痛的急性發作。➤slow緩慢的開始▸➤early早的開始▸➤delayed, late推遲的開始;晚的開始VERB + ONSET➤delay推遲開始▸➤prevent阻止開始▸➤mark, signal標誌着開始◇His first hit record marked the onset of an astonishing career.他的第一張風行一時的唱片標誌着輝煌事業的開始。◇The development of pubic hair signals the onset of puberty.長出陰毛標誌着青春期的開始。PREPOSITION➤after the onset開始後◇after the onset of sleep進入睡眠後➤at the onset開始時◇at the onset of the war戰爭開始時➤before the onset, prior to the onset開始前➤since the onset自開始以來