1. How often 引导的特殊疑问句How often do you do sth ?意为“你多久做一某事？”该句型常用来询问某动作隔多久进行一次，即询问中间隔的时间长度、动作发生的频率。常见的答语是：always, usually, often, sometimes, hardly ever, three times a day, once a week, every day 等。 如：-How often do you hike with your friends ? 你隔多久和你的朋友去远足一次？-Every Friday . 每周五。-How often do you clean your room ? 你多长时间打扫一次你的房间？-Often. 经常。 2. What do you/does he/she do on/in? 句型What do you/does he/she do on/in? 你/他/她在(时间)做什么？这是询问某人在某时通常干什么的句型。答语通常为
