【正确答案】 D

【答案解析】[解析] as if/as though从句谓语可以用虚拟语气或陈述语气。如果as if表述的并非实际情况就用虚拟语气，谓语用一般过去时表示与现在事实相反的情况，谓语用过去完成时表示与过去事实相反的情况。如：I’ve loved you as if you were my son(but you are not my son)，You look as if you didn’t care(but in fact you do care)．He talks as if he had been to the Great Wall(but he hasn’t been there)．但并非在一切情况下as if从句谓语都用虚拟语气，当as if表述的内容接近实际情况时，谓语就用陈述语气，特别是当主句谓语是look/sound/taste/smell/seem等动词时。如当你看到天空乌云密布时说：It looks as if it’s going to rain．(表示有可能下雨)；当你吃肉时尝到肉有些怪味时说：This meat tastes as if it has already gone bad．(肉可能真的变味了)。以上这些从句的谓语都是陈述语气，表述的内容是实际情况或接近实际情况。