---- _________will Mr Black return ---In a week.A .How long B.How soon C.How often D.what time

---- _________will Mr Black return ---In a week.A .How long B.How soon C.How often D.what time
---- _________will Mr Black return ---In a week.A .How long B.How soon C.How often D.what time

---- _________will Mr Black return ---In a week.A .How long B.How soon C.How often D.what time
选择B 四个选项中,how long指的是时间持续了多久,回答时,多使用时间段,而且多使用介词for 如how long are you staying?---- for a month how soon 意思是多久以后.注意这个短语必须使用表将来的时态.回答时,多使用时间段,介词使用in 如how soon is he leaving?--- in an hour.意思是一个小时以后,而不是一个小时以内 但是如果是具体的时间点,使用介词after 如how soon is he leaving?--- after seven o'clock.how often 提问时表示某事发生的频率.译为多久一次.如how often do you play computer?----twice a week.what time 提问是表示具体在什么时间点上发生了某事 如what time will you leave?--- i will leave at seven.