The adverb 一连 emphasizes the repetition of the same events one after another.
一连 is placed either before a verb used as a predicate or before a classifier which indicates a number of repetitions. The classifier can be either a precise number or the pronoun 几 .
Examples
这里一连好几天都是雨天
It has been raining here for days
zhèlǐ yìlián hǎo jǐ tiān dōu shì yǔtiān
今天一连运到了四五批货
Four or five lots were shipped in a row today
jīntiān yìlián yùndàole sìwǔ pī huò
他上了床,在一连三天三夜没睡好以后终于能舒舒服服地睡上一觉了
He went to bed and finally got somegood sleep after three nights of insomnia
tā shàng le chuáng, zài yìlián sān tiān sān yè méi shuìhǎo yǐhòu zhōngyú néng shūshufúfu de shuìshàng yí jiào le