Children may get into some bad habits__________they lack self-discipline.A.wh...

作者: tihaiku 人气: - 评论: 0
问题 Children may get into some bad habits__________they lack self-discipline.
选项 A.when B.unless C.though D.until,
答案 A
解析 考查连词辨析。句意为“孩子们可能会养成一些坏习惯,__________他们缺乏自律性”。因前后句是条件关系,故空缺处应填的是表示条件的连词,though表示让步,until表示时间,故排除C、D。当unless作为连词时表示“除非,如果不”,含有否定意义,相当于if条件状语从句的否定形式,unless=if…not。这里when相当于if.引导条件状语从句。

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