词汇详解：
一.词语辨析
1. used to / would
【解释】
would与used to都可用来表示过去经常性或习惯性的动作。
would只能表示反复发生的动作。如果表示过去经常性的状态，就不能用would，只能用
used to。
used to表示过去经常性或习惯性的动作或状态，但现在已经结束。would则表示有可能再
发生。
【练习】
用used to或would填空。
1). When we were boys we ________ go swimming every summer.
2). He ________ be very poor.
3). People ________ believe that the earth was flat.
4). He ________ go to the park as soon as he was free.
Keys: 1). used to / would 2). used to 3). used to 4). would (现在有可能再去)
