问题
单项选择题
When a pencil is partly in a glass of water, it looks as if it ______.
[A] breaks [B] has broken [C] were broken [D] had been broken
答案
参考答案：C
解析：[精解] as if 引导的从句常用虚拟语气。表示与现在的事实相反用一般过去时，如果是动词be，无论主语是单数还是复数一律用were。表示与过去的事实相反用过去完成时；表示与将来的事实相反用过去将来时。根据题意本题选C。