five-day是用來作定語的，後面可以加名詞，意思是“五天的”。例句：The workforce have recently been calling for their working hours to be reduced.Many companies have accordingly switched to a five-day week. 工人們最近一直在呼籲縮短工作時間。許多公司於是轉成了一週五天工作制。A five-day working week affords us more leisure time. 每週五天工作制使我們有了更多的休閒時間。five days可以作狀語， 意思是5天。例句：They haven"t had a square meal for four or five days. 他們已經四五天沒吃上一頓像樣的飯了。Soak the walnuts in brine for four or five days. 把核桃放在鹽水裡泡四五天。
five-day是用來作定語的，後面可以加名詞，意思是“五天的”。例句：The workforce have recently been calling for their working hours to be reduced.Many companies have accordingly switched to a five-day week. 工人們最近一直在呼籲縮短工作時間。許多公司於是轉成了一週五天工作制。A five-day working week affords us more leisure time. 每週五天工作制使我們有了更多的休閒時間。five days可以作狀語， 意思是5天。例句：They haven"t had a square meal for four or five days. 他們已經四五天沒吃上一頓像樣的飯了。Soak the walnuts in brine for four or five days. 把核桃放在鹽水裡泡四五天。