有关 when while的题目He was pretending ________ while his mother came in his study.A.reading B.to be reading C.read D.be reading B 不是说while后面的动词要用延续性的,可是这了的come是短暂动词啊?

关于when 和 while 的有关练习题目when 和while 有关 when while的题目He was pretending ________ while his mother came in his study.A.reading B.to be reading C.read D.be reading B 不是说while后面的动词要用延续性的,可是这了的come是短暂动词啊? while&when的区别. when while的区别 when while 的区分 有关介词的几道题目1.He slept well _______all the windows open.A.when B.while c.with D.because2.The plane is flying ________the clouds.A.on B.above C.over D.though3.The children threw a stone _________the flog.A.at B.for c.on D.cross请写出 一道有关线性代数的题目（题目是用英语出的）For the vectors v=(3,4) and w=(3,4) test the Schwarz inequality on v·w and the triangle inequality on ||v+w||.Find cosA for the angle between v and w.When will we have equality |v·w|=|| When he gets tired,he ____(sleep)for a while as when while 的区别 While和When的区别? when和while的区别 when和while的区别 When While As 的用法 when ,while,as的区别 while和when的用法 when 和 while的用法 when和while的用法 when和while的区别