adj.解释作法的,指引的;
例句:
Our therapists will show you how to clear your mind of worries.
我们的治疗师会教你如何消除心中的忧虑。
The health authorities now know how to deal with the disease.
卫生部门现在知道如何对付这种病了。
They knew how to get themselves up in those days.
那时候,他们懂得打扮。