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  3. Although Mary has vowed to become a professional clarinetist, she will have trou

Although Mary has vowed to become a professional clarinetist, she will have trou

游客2023-12-31  12
问题 Although Mary has vowed to become a professional clarinetist, she will have trouble achieving her goal if she significantly increases the number of hours that she practices each week.
选项 A、as long as she significantly increases the number of hours
B、as soon as she increases the number of hours significantly
C、now that she increases the number of hours significantly
D、unless she significantly increases the number of hours
答案 D
解析 尽管玛丽发誓要成为职业单簧管演奏家，但如果她不大大增加每周练习的时间，就很难达成目标。本题画线部分误用条件从句的引导词。画线部分表示“如果她大大增加时间”，这与主句的意思(很难达成目标)相矛盾，故此处if使用错误。题干主句尽管没有否定词，但have trouble doing sth．的语义是否定的，因此条件从句需要使用表示转折意义的引导词unless，才能正确表意。选项A、B和C的引导词分别表示“只要”“一旦”“既然”，都不能与主句构成符合逻辑的表达。
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