摘要: mark out 划线标出--界线 [典例] Please mark out the sentences that you don’ t understand with a red pen. 请用红笔标出你不懂的句子. [重点用法] be marked with... 标记着-- [练习] 根据句子的要求在括号里填入适当的词. 1). I’ ve lost a case “IX on its back. 2). She carefully the important phrases and sentence patterns. Keys: 1). marked with 2). marked out

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