If water becomes increasingly scarce in decades ______, water shortage will become a hot issue all over the world.


  1. A.
    coming
  2. B.
    having come
  3. C.
    to come
  4. D.
    to be coming
C
試題分析：decades to come 未來的數(shù)十年，to come不定式作定語，表將來。
考點(diǎn)：非謂語動(dòng)詞的用法
點(diǎn)評：解題思路，①解析句子結(jié)構(gòu)，確定設(shè)空在句子中充當(dāng)?shù)墓δ埽ㄈ鐮钫Z、定語或賓補(bǔ)）；②找準(zhǔn)相關(guān)動(dòng)詞的邏輯主語，確定該動(dòng)詞與邏輯主語是什么關(guān)系（主動(dòng)還是被動(dòng)）；③搜索句子中相關(guān)的時(shí)間信息，確定非謂語動(dòng)詞的恰當(dāng)形式；④將該選項(xiàng)置入空中，看是否能夠做到字從意順，或是否能傳達(dá)有效信息、完成交際任務(wù)。
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