这些都是疑问词,用来组成特殊疑问句。
how long 意为“多久”,谓语常用一般过去时或现在完成时。例句:---How long did you stay at your grandmother's? ---Two weeks. ----你在奶奶家住了多久?---半个月。---How long have you studied English? ---Three years. ---你学英语多久了?---三年了。
how soon 意为“多长时间以后”。例句:How soon can I learn to drive the car? 我要多久能学会驾车? How soon will the train come? 火车多久才能来?
how many 意为“多少”,后面只能接可数名词。例句:---How many books are there in your schoolbag? ---Ten. ---你书包里有几本书?---十本。
how much 意为“多少”,后面只能接不可数名词。例句:---How much homework do we have? ---Quite a lot. ---我们有多少作业?---很多。
how often 意为“隔多久”,问重复做某事的频度。例句:---How often do you have a bath?---Every day. 你多久洗一回澡?---每天都洗。注意,every day 要分开写,不能连着写。
how far 意为“多远”,问距离。例句:---How far is it from your home to the school? ---Fifteen minutes' walk. 从你家到学校有多远?---步行15分钟吧。注意,问句中的 it 不是“它”,是指“距离”。