2. 外语
  3. ______, they would not have achieved such a great success.

______, they would not have achieved such a great success.

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问题 ______, they would not have achieved such a great success.
选项 A、Hadn’t they made enough preparations
B、Had they not made enough preparations
C、If they didn’t make enough preparations
D、Were they to make enough preparations
答案B
解析 倒装句题。根据句意，这里须用虚拟语气，根据主句时态判断，这里是对过去情况的虚拟。虚拟语气从句可以省略if并把had，should与were提到从句的句首，构成部分倒装。A错误，只能将had提前，否定词放在主语后；B形式意义完全正确；C是对现在的虚拟，与主句时态不符；D是对将来的虚拟，也不对。
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