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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-datehow-long-how-soon与-how-often的区别Key Words【关键词】Key Words【关键词】1in prep在之后（用于将来时） in l00 years 在一百年后 People will have robots in their homes in 100 years 一百年以后，人们家中会有机器人。 比较：after在之后（用于过去时，表
2、示从过去某时间起一段时间之后） He will come back in two hours他两小时后会回来。 He came back after two hours 他是两小时后回来的一般将来时 In +一段时间，will do , 用 how soon提问一般过去式 时间+ago last +时间 after+时间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 l
3、ong 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. 约两周。How long will it take? 这要花多长时间呢？_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 ofte
4、n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.
5、 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 youto 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 tim
6、es 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.Ahave gone to、have been to、have been in 区别have gone to/have been to/have been in:have gone to+地点“已去了（还未回来）” -I ca
7、nt find those children, where are they?-They have gone to the farm. (去了农场，不在这儿)have been to+地点“去过（原来去过，现在已回） ”句尾常接次数或多个地点或before，或句中常有ever, never等。She has been to Qingdao three times. I have been to two big cities.Have you been to Dalian before? I have never / ever been to Dalian.I have never been there before. Where have you been? 你去哪儿了？(此行省略了to)have been in + 地点，“已在（多久了） ”句尾常接for + 时间段，或since + 时间点 / 一般过去时的句子。Peter has been in China for a long time.Ive been here for 2 hours / since 2 hours ago. (此短语省略了in)-