Children may get into some bad habits ___________ they lack self-discipline.A...

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。因为前后句是条件关系,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和D。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。句意为“孩子们如果缺乏自律性.他们可能会养成一些坏习惯”。
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