点拨：____ 多久一次，用来提问动作发生的频率。回答用：everyday, once a week, twice a month等词语。

____多长，用来询问多长时间，也可询问某物有多长。

How long does it take to get to Shanghai from here? How long is the ruler?

____多远， 用来询问距离，指路程的远近。

How far is it from here to the park? It's about 2 kilometers.