unless。 conj。 if。。。not; except if or except when 如果不; 除非; 除非在。。。的时候: * You'll fail in French unless you work harder。
你要是不再加把劲儿, 法语就考不及格了。 * Unless England improve their game they're going to lose the match。 英格兰队如果不改进打法, 就会输掉这场比赛。 * I wouldn't be saying this unless I were sure of the facts。
要是我对这些事情没有把握, 我就不说这话了。 * Come at 8 o'clock unless I phone, eg to tell you a different time。 请8点钟来, 如果我不打电话 的话。 * I sleep with the window open unless it`s really cold。
我总是开着窗户睡觉, 除非天气非常冷才关上窗户。 。
