how-long;how-often;how-soon;How-far的意思及用法.doc

Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-datehow-long;how-often;how-soon;How-far的意思及用法how long；how often；how soon；How far的意思及用法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? 他(每隔)多久来一次?B：Once a month. 每月一次。A：How often do you visit your mother? 你多长时间看你妈妈一次?B：Once a week. 一周一次。三、how soon的用法how soon 指再过多久，主要用来对表示将来的一段时间(如：in an hour, in two weeks 等)提问。如：A：How soon will he be back? 他要多久才回来?B：In an hour. 1 小时以后。A：How soon shall we know the results? 我们多久能知道结果?B：I dont know. 我不知道。四、How far 和How long 的区别1.指持续多长时间（多久）  how long  How long have you been here?  For five months.  2. 指长度（多长）  how long  How long is the bridge?  Its 500 metres.  3.how far 指距离（多远） How far is it from here to the zoo?  Its 6 kilometres-