1.although较正式,语气强 Although he was tired,he went on working. 2.although引导的从句放在主句前后均可,有时还可放在句中. Although many difficultie...
1、until：conj./prep.到…时，直到…为止。2、till：conj./prep.直到n.(大商店中的)交款处，收银台，(现金出纳机的)放钱的抽屉v.耕作，犁地。 until：用作介...
