as if 后面的时态

　　as if和as though这两个连词经常用在be，act，appear，behave，fell，look，seem，smell，sound，taste及其他描写行为举止的动词之后，引导一个方式从句。

　　They completely ignore these facts as if (as though) they never existed.

　　他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）

　　He looks as if (as though) he had been hit by lightning.

　　他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。）

　　It looks as if the weather may pick up very soon.

　　看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）