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1、how long,how soon和how often都含有how,并且都和“多长时间、多久”有关,但它们的用法不相同.how long意为“多久、多长时间”,主要是对一段时间进行提问,答语通常是（for）three days/weeks/months等时间段,它可用于各种时态.How long do you stay in Beijing every year?每年你在北京住多久?How long have they lived here?他们住在这里有多久了?How long were you not at school last year?去年你多久没上学?About two weeks
2、.约两周._how soon意为“还要多久”,是对从某个基本时间到将来某动作结束或某动作发生这段时间提问,常用在一般将来时态的句子中,其答语通常是“in + 一段时间”.How soon can you finish the work?还要多久你能完成这项工作?In half an hour.半小时后._how often意为“多久次、是否经常”,用来提问在某一特定的时间进行某个动作的次数,答语通常是always,usually,often,sometimes,once/twice a day/month等.How often do you get to school very early?你
3、多久早到校一次?Usually.通常.How often do you see a film?你多久看一次电影?Once a month.每月一次._自我测试 选择填空.1. _ did the meeting last?About half an hour.A.How soon B.How long C.How far D.How much2. _ will Ezhou-Huanggang Bridge be finished?In a few months.A.How soon B.How long C.How often D.How far3. _ will it take you to
4、 get to the post office?About half an hour.A.How old B.How long C.How soon D.How often4. _ do you write to your mother?Once a month.A.How many times B.What time is it C.How soon D.How often5. _ a year does your school have sports meetings?Twice a year.A.How often B.How soon C.How long D.How many times_答 案：1.B 2.A 3.B 4.D 5.A2 ,. _ . . _ . . ? _ . . ? _ . . ? - _ . _填选 _.一 影看多 通 次校多? / 语数动行时特一来用否次“ _时半 作这完久还 ”段 常答,的来一常提间发作结动到时某是”还“ _约 学久去 ?了这们 多北每 .时各,段 / 是语,进间是,间、多为 不的但有多间“和 有