until既可用作介词又可用作连词,所引导的介词短语或从句在句中充当时间状语或时间状语从句。在运用该词时要注意以下几点: 1.until同肯定句式连用时,句中的谓语一般要用延续性动词,表示某动作一直延续到until所表示的时间为止,汉语可译为“到……为止”。如: Until can be used as both a preposition and a conjunction, and the prepositional phrase or clause that it guides serves as a temporal adverb or a temporal adverbial clause in the sentence. In the use of the word should pay attention to the following points: 1.until used in conjunction with the affirmative sentence, the predicate in the sentence generally use a continuation verb, indicating that an action has continued until the time indicated by until, Chinese can be translated as “ Until...”. Such as: