精选优质文档-倾情为你奉上how long；how often；how soon；How far的意思及用法一、how long的用法how long有以下两个主要意思：1. 表示多长时间，主要用来对一段时间(如three days, four weeks 等)提问。如：A：How long did he stay here? 他在这儿呆了多久?B：About two weeks. 大约两个星期。A：How long does it take to get to London from here? 从这里到伦敦要多长时间?B：At least ten hours. 至少要10个小时。2. 表示某东西有多长。如：A：How long is the river? 这条河有多长？B：About 500 km. 大约500千米。二、how often的用法how often 指每隔多久，主要用来对频度副词或状语(如：once a week, three times a month 等)提问。如：A：How often does he come here?
