how often、how long、how soon、how far、how many times的用法：
①. How long表示“时间多久或物体多长”. 表示时间侧重指“一段时间”.针对“How long”的回答一般是时间段, 如“for three days”, “three years”
e.g. “How long were you away last year?”
“About two weeks”
②、How often表示“多少时间一次或每隔多久”.是就做某事的频率提问。

针对How often的回答一般是：①every day、always、usually、often、sometimes、hardly ever、never
②Twice a year. Three times a wee、 once a day、
e.g. “How often do you watch TV?”
“Three times a week.”
③. How soon表示“多久之后”.侧重某人某事能多快时间完成. How soon的回答一般为: “in + 时间
段” e.g. “in two days”“in five years”
e.g. “How soon will you be ready?”
“I’ll be ready in five minutes”
④．How far表示“多远”指路程、距离。

―How far is it?
―Ten minutes by bike.
⑤、how many time“多少次“，询问次数，常对“once、twice、three
times”等提问。