five minutes‘ walk用什么提问 how long 还是how far

问题描述:

five minutes‘ walk用什么提问 how long 还是how far

how long 指时间的长度,或河流的长度,如:How long can I keep this book?For four weeks.这本书我能借多久?四周
how far指距离,如; How far it from here?离这多远?
归纳:long指长度,far指距离,因此用how far提问.