"How long does it take?" ,用来询问完成某项活动或者到达某个地方所需要的时间。
情景会话1 我要乘火车去纽约
Zoey: How long does it take to get to New York from here by train? (从这坐火车到纽约需要多长时间?)
Staff: It takes about 3 hours. (差不多要3小时。)
情景会话2 我借朋友Olivia的相机
Zoey: How long does it take to charge the battery fully? (把电池充满需要多久?)
Olivia: It takes about 2 hours. (差不多要2小时。)