how soon how long how often的区别
how soon指再过多久, 主要对表示将来的时间进行提问,比如:in an hour, in three weeks。how long表示多长时间,与连续性动词连用,主要用于对一段时间进行提问,常用for+时间段回答。how often主要强调动作发生的频率。
How long
How long多久了(问时长),以For+时间段或since +时间点作答
How long did you stay here? I stayed here for two weeks.
How soon
How soon多久之后(问解决事情等的速度),用in+时间段作答
How soon will your father be back? In two weeks.
How often
How often多经常(问频率) ,常以数词+ times a week(month 、year……)作答
(强调做了几次)如果句子中有always, usually, often, never, once a day, twice a week, three times a year等词时,常用how often 提问。
How often does your brother go home? Twice a year.