第1个回答 2006-07-28
when指时间.how long指多久how soon 指频率
第2个回答 2006-07-28
when什么时候?
when will you be back?
in 3 days。
how long 多长时间
how long does it take for going home?
3 hours
how soon 多快
how soon can I take my card back?
in 3 days(这种情况也可以用when!)本回答被提问者采纳
第3个回答 2006-07-28
when是指什么时候
When are you going school ?
In fine doy.
haw lang 多长时间
Haw long is it tates you for your home to school?
About tow hours.
hao soon 多快;与"when”相同;多做将来时的回答。
How soon will your mother come back to Beijing?
In a week.
第4个回答 2006-07-28
when 什么时候 是疑问副词
how long多久e.g How long have you been here
how soon是指频率