句1 Some of them have disappeared,while others remain today.它们中一些消失了,而有些却保存了下来。remain vi.留下;剩余;残存(注意remain不用在被动语态中) He will remain in Beijing three weeks during the Olympic Games.奥运会期间他要在北京呆三个星期。[知识拓展]remain link v.保持;依然,仍然;继续(后常接名词、形容词等作表语) Sentence 1 Some of them have disappeared, while the others remain today. Some of them have disappeared, and some have survived. Left vii; remaining; remaining (note remains not in passive voice) He will remain in Beijing three weeks during the Olympic Games. During the Olympics he will stay in Beijing for three weeks. [knowledge development]remain link v.keep; still, still; continue (later often accept nouns, adjectives, etc. as predicates)