5、_____ I _____achild.(三)预习质疑________________________________________________________________二、课中实施一、精讲点拨1.--Howlonghaveyouhadthatbikethere?--Ihavehaditforthreeyears辨析:howlong,howsoon,howoften,howfarHowlong多久,多长(时间)。对时间段提问,如:for+时间段;since+过去的时间点。e.g.--Howlonghaveyouwo