9.as from …自…起
Fares on all routes will rise as from January 11.从1月11日起所有线路的票价都会上涨。
As from tomorrow, the shop will stay open until 10 p.m.从明天起这家店铺晚上10点才打烊。
10.as if
(describing, comparing)仿佛；好像
He talked as if he knew all about it.他讲得好像自己了解这件事情的来龙去脉似的。
(emphasizing that something is not true)又不是
Getting my work done! My God! As if it mattered.让我的工作完成吧！天啊！ 这件事又不是真的有什么要紧。
<口>(used dismissively)不可能
You never know, you might get a pay rise.–As if!谁知道, 或许你会涨工资呢。——不可能！