as if 后的虚拟是要分情况的: 1.如果假设的情况与现在事实相反,则用过去式; 2.假设的情况与过去事实相反,则用过去完成式; 3.假设的情况与将来事实相反,则用would/could/minght+动词原形。 你题目中的情况是:“那对老夫妇对待TOM像对待自己儿子一样好。”——现实的情况是,现在TOM不是他们的儿子,即:假设的情况(像对待自己儿子)与现在的事实(TOM不是他们的儿子)相反,所以参照第二点,应该用过去式。即:He is their son.中be动词的过去式:were.
英语中虚拟语气的表达方法不一,as if 后的虚拟也要分情况,与现在相反,用过去式,与过去相反用过去完成式,与将来相反,用would/could/minght+动词原形。 如:she looks as if she were ten years younger than me. she talks as if she had known her before. reques...