知识点对点 how long how soon how often how many times 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，它可用于各种时态答语通常是 A for +时间段如（for）three days/weeks/months 等时间段，B Since + 时间点。如 since I was ten years old. Since 1995. since he get back. eg: ---- How long do you stay in Beijing every year? 每年你在北京住多久？---I stay in Beijing for two months every year.我每年呆两个月。 --- How long have they lived here? 他们住在这里有多久了？----They have lived here since 1998. —How long were you not at school last year? 去年你多久没上学？ —For about two weeks. 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 + 时间段”。 此时可以用when 代替—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 soon will you come back?= When wil you come back?----In tow days.两天后。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。 How many times 多少次 用来对次数提问。回答语为 once ,twice ,three times ,four times.---How many times do you play computer games a week?你一周玩几次电脑游戏？-----Twice （两次）---How many times have you been to Beijing?---Nine times.另外：1 how 怎样 How’s the weather today? 今天天气怎样？ how far 多远 How far is it from your home to school?从你家到学校多远？ how much 多少+不可数名词，How much milk is there in the bottle?瓶子里有多...
