2. 外语
  3. The sun rises in the east and sets in the west, so it seems as if the sun______round the earth.

The sun rises in the east and sets in the west, so it seems as if the sun______round the earth.

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问题 The sun rises in the east and sets in the west, so it seems as if the sun______round the earth.
选项 A、should circle
B、circles
C、were circling
D、is circling
答案C
解析 虚拟语气题。as if／as though引导方式状语从句或表语从句时，若说话人认为从句所述的是不真实的或极少有可能发生或存在的情况时，从句要使用虚拟语气：如果从句表示与现在事实相反，从句谓语动词用一般过去时；如果从句表示与过去事实相反，从句谓语动词用过去完成时；如果从句表示将来的可能性不大，从句谓语动词用would／might／could+动词原形。由前半句的时态可知后半句表示的是与现在的事实相反，故选项[C]为答案。选项[A]是虚拟语气，但as if引导的从句使用虚拟语气时不用should do的形式．故排除：选项[B]和[D]并非虚拟语气，故排除。
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