如何理解：While we were there the Salon...

While we were there the Salon and the shop closed down...or were moving...no notices on either building explaining that one? So I had to have a pedi and manicure at the spa - waste of money and time...but I can't comment about the other treatments they offer.

We must consider whether it will be worth while. 如何区分when,while,then? while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard 在VB里While x到底怎么理解? 如何理解？有几种理解？ At frist we really didn't know what to do,but after a while,we ___ a good idea. 翻译think about it.If ,while walking to work,we mark where we are by passing a certain building. wh 如何区分as,while,since,until when和while应如何区分? 如何区分"when"和while?