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conj 直到……之時(shí);在……以前(before or up to the time when)：go straight on～you come to the post office/you reach the station 一直向前走，走到郵局/車(chē)站(再停下);I propose waiting～the police get there. 我建議一直等到警察來(lái)。Don't promise Harry～we've had time to think about it. 在我們有空考慮這個(gè)問(wèn)題之前，不要對(duì)哈利許諾?！纪絬ntil;

prep 直到……之時(shí)，直至(up to the time of)：wait/talk～ten o'clock/next Monday/tea/dawn/nearly midnight 等/談到10點(diǎn)鐘/下周一/下午茶的時(shí)候/黎明/將近午夜;fight～death 戰(zhàn)斗至死;work from morning～night/from Monday～Friday 從早到晚/周一到周五一直工作;not get back～late at night/after the lesson 直到夜深/上完課才回來(lái);I don't know～now that you were ill. 直到現(xiàn)在我才知道你病了?！纪絬ntil;

up till 到……為止：I've lived in the country all my life up～now. 到現(xiàn)在為止，我一輩子住在農(nóng)村。

【注意】till和until 基本相同，但句首一般不用till，而用until。