How ofter与How long与How 具体点,用法也可以

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Howofter与Howlong与How具体点,用法也可以Howofter与Howlong与How具体点,用法也可以Howofter与Howlong与How具体点,用法也可以一、howsoon表示“要

How ofter与How long与How 具体点,用法也可以
How ofter与How long与How
具体点,用法也可以

How ofter与How long与How 具体点,用法也可以
一、how soon表示“要过多久以后,要到什么时候”的意思.用来对句中带有in no time,immediately,before long,(very)soon,in five days(weeks,months,years,etc.),after Monday(January,1949 etc.)提问.如:
He’ll come back in two hours.→How soon will he come back?
二、how often表示“多长时间一次,是否经常”的意义,通常用来对sometimes,usually,never,seldom,often,always,every day,every two weeks等表示频度的副词或词组提问.如:
He writes to his mother once a month.→How often does he write to his mother?
三、how long表示“多长时间”的意义,用来对句中带有for,unit(till),since,all the morning,from…to…等表示一段时间的状语提问.对某些动词(take,spend等)后面表示时段的名词提问时也用how long.如:
Mr.Black has lived in Shanghai for over two years.
→How long has Mr.Black lived in Shanghai?

1. how long
  指多长时间,主要用来对一段时间(如three days, four weeks 等)提问:
  How long ago was it? 这是多久前的事了?
  How long do you think you’ll be gone? 你想你会离开多久?
  How long have you known her? 你认识她有多久了?...

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1. how long
  指多长时间,主要用来对一段时间(如three days, four weeks 等)提问:
  How long ago was it? 这是多久前的事了?
  How long do you think you’ll be gone? 你想你会离开多久?
  How long have you known her? 你认识她有多久了?
  How long have you been studying the problem? 这问题你研究多久了?
  “How long did he stay here?” “About two hours.” “他在这儿呆了多久?”“大约两小时。”
  2. how often
  指每隔多久,主要用来对频度副词或状语(如once a week等)提问:
  How often does he come here? —Once a month. 他(每隔)多久来一次? —一每月一次。
  How often do you visit your mother?一Once a week. 你多长时间看你妈妈一次?——一周一次。
  How often do you go to the dentist?一I go every six months. 你多久去看一次牙齿?——我每6个月去一次。
  3. 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:
  How soon can you come? 你多快能赶来?
  How soon shall we know the results? 一I don’t know. 我们多久能知道结果? ——我不知道。
  How soon will he be back?—In an hour. 他要多久才回来?——1小时以后。
  How soon will you be / have finished, dear? 亲爱的,你还要多久才能准备好呢?
  How soon will you know your holiday dates? 你什么时候才能知道休假13期?

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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 ge...

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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 don’t know. 我不知道。
How far 和How long 的区别
A:
持续多长时间(多久)
how long
How long have you been here?
For five months.

长度(多长)
how long
How long is the bridge?
It’s 500 metres.

距离(多远)
how far
How far is it from here to the zoo?
It’s 6 kilometres

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