经济学人双语精读TE-2023-06-01期考研英语杂志英文外刊|海洋学：海底下有什么？Oceanography：What lies beneathMuch o...(展开)

卫报双语精读TG-2023-05-20期Funding appeals for healthcare double as waiting t...(展开)

一、根据从句动作的持续性来区分1. 主短从长型：即主句是一个短暂性的动作，而从句是一个持续性动作，此时三者都可用。如：Jim hurt his arm whil...(展开)

82.The cave might never have been dis covered had not the entrance been spotted ...(展开)