怎样分辨would与used to在用法上的异同

恒温17℃

<FONT size=2>Would与used to都可用来表示过去经常性或习惯性的动作，常常可以换用。如： <BR>（1）When we were boys we used to/would go swimming every summer. <BR>小时候，每到夏天我们都要去游泳。 <BR>（2）He used to/would spend every penny he earned on books．<BR>过去，他通常把挣来的钱全花在买书上。<BR>Would与used to都不能用来表示动作发生的具体频度或具体的一段时间。例如，不能说： <BR>（3） I would/used to go to France six times． <BR>（4）He used to live in Africa for twenty years． <BR>上两句应改成： <BR>（5）I went to France six times． 我去过法国6次。 <BR>（6）He lived in Africa for twenty years. 他在非洲住过20年。<BR>Would与used to的区别主要有以下几点：<BR>a． Used to可指过去的状态或情况，would则不能。如： <BR>（7）School children used to know the story of how Abraham Lincoln walked five miles to return a penny he'd overcharged a customer．（不能用would） <BR>过去，学校的孩子们都知道亚伯拉罕·林肯怎样步行5英里退还多收顾客1便士的故事。 <BR>（8）Yet，he cannot but remember China as it used to be．然而，他不会不记得旧日的中国（不能用would）。 <BR>b． Would表示反复发生的动作。如果某一动作没有反复性，就不能用 would，只能用 used to。例如： <BR>（9） And from that day on， as soon as the table was cleared and the dishes were gone. Mother would disappear into her sewing room to practice.<BR>从那天起，只要碗盘撤掉、饭桌一清理干净，妈妈就马上躲进做针线活的房间练习起来。（具有反复性） <BR>（10）I used to live in Beijing． 我过去住在北京。（没有反复性）<BR>c． Used to表示过去经常性或习惯性的动作或状态现在已经结束，would则表示有可能再发生。如： <BR>（11）People used to believe that the earth was flat．<BR>过去，人们总以为地球是扁平的。（现在已不再这样认为） <BR>（12）He would go to the park as soon as he was free．<BR>过去，他一有空就去公园。（现在有可能再去）<BR>注意：used to的否定式和疑问句: <BR>（13）过去我不喜欢歌剧。 <BR>I used not to like opera．<BR>I usedn't to like opera．<BR>I didn't use to like opera． <BR>（14）过去你喜欢歌剧吗？ <BR>used you to like opera？<BR>Did you use to like opera？ <BR>（15）Didn't you use to like opera？ 你过去不喜欢歌剧吗？ <BR>（16）You used to like opera, didn't you？ 你过去喜欢歌剧，是吗？ <BR>（17）There used to be a church here， usedn't there？ 过去这里有座教堂，是不是？ </FONT><BR>