虚拟语气as if的三种用法

　　两点说明

　　1.从句所表示的内容若为事实或可能为事实，也可用陈述语气。

　　It looks as if we'll be late.我们似乎要迟到了。

　　This meat tastes as if it has already gone bad.这肉吃起来似乎已经坏了。

　　在现代英语中，有时即使从句内容不是事实，也可用陈述语气。

　　I feel as if I'm floating on air.他感到好像漂浮在空中。

　　The stuffed dog barked as if it is a real one.玩具狗叫起来像真狗。

　　2.注意It isn't as if的翻译

　　It isn't as if…是英语中的固定句式，也可说成 It’s not as though，主要用于表示某个解释不正确，意思是“好像不是”“显然不是”“真不是”等。

　　It isn't as if he were poor. 他不像穷的样子（他又不穷）。

　　It isn’t as if he didn’t recognize me! He just walked straight past me as I stood there. 他不像是没认出我！可是我站在那里他迳直从我跟前走过。

　　as if 从句的作用

　　1.在look，seem等系动词后引导表语从句。

　　She looks as if she were ten years younger.

　　她看起来好像年轻了十岁。

　　2.引导方式状语从句

　　She loves the boy as if he were he father.

　　她爱这个男孩，就好像他是她的父亲一样。