She will go in three days. 她将会三天后走。 2. how long, how often, how soon how long指多长时间,主要用来对一段时间(如three days, four weeks 等)提问。 例如:How long ago was it?这是多久前的事了? how often指多久一次,主要用来对频度状语(如once a week等)...