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What would have happened,______as far as the river bank?


  1. A.
    Bob had walked farther
  2. B.
    if Bob should walk farther
  3. C.
    if Bob walked farther
  4. D.
    had Bob walked farther
D
解析:
試題
分析:考查虛擬語氣和倒裝句。本句是與過去事實相反的倒裝句,故條件句中使用過去完成時的形式,如果把if去掉,句子要使用部分倒裝的形式。句意:如果Bob走到河堤邊上,會發生什么樣的事情呢?故D項正確。考點:考查if條件句的虛擬語氣和倒裝
點評:if條件句的虛擬語氣和倒裝是高考中的重點內容:如果過去事實相反,條件句中使用過去完成時,主句使用“情態動詞+have done”;如果主句與現在事實相反,條件句中使用過去時,be動詞使用were,主句中使用“情態動詞+動詞原形”;
如果與將來事實相反,條件句中有三種:過去時;
were to do ;should+動詞原形,主句使用“情態動詞+動詞原形”;
要特別注意如果省略了if,句子要使用部分倒裝的形式,把助動詞,be動詞,情態動詞提之主語前。
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