15.I have a pain in my back ____ I catch a cold.(  )
A.at every timeB.every timeC.every time thatD.every time when

分析 每當(dāng)我感冒時后背都疼.

解答 答案:B.
分析句子的結(jié)構(gòu)可知,劃線處的前后均為一個完整的句子,所以需要一個連詞來連接,只有every time可以用來兩句時間狀語從句;A項為一介詞短語,在句中只能作狀語,C項中的that多余,D項中的when指代不明,可排除.故選B.

點評 本題考查的是從屬連詞,要熟悉選項中從屬連詞的意思并結(jié)合具體的語境選擇出正確的選項.

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