1、M8Unit5Meetingyourancestors词汇教案新人教版高二英语选修八第五单元Meeting your ancestors教案之语言点详解词汇详解：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
2、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) 2. interrupt / d
3、isturb / bother 【解释】 interrupt意为“打断，中断”，尤指中断某活动的连续性。 disturb意为“因焦虑、失望、困惑等情感因素而使人心绪收到明显干扰”。 bother意为“扰乱某人心绪而使人不能专心或专一”。 【练习】选择interrupt，disturb，bother的正确形式填空。 1). She was _______ to hear of your illness. 2). I’ m sorry to _______ the meeting, but there is an urgent long-distance call
4、for Mr. Zhou. 3). Don’ t _______ yourself too much about me. 4). We _________ in the middle of our conversation. Keys: 1). disturbed 2). interrupt 3). bother 4). were interrupted 9Practicemakesperfect.M8Unit5Meetingyourancestors词汇教案3. assume / suppose / presume 【解释】 assume“假定，设想”，
5、用于逻辑推理，强调一种缺乏证据的结论，以检验某种建议。 suppose意为“根据一定证据作出的见解”，最不正式。 presume意为“某人以过去的经验作为依据，对某事作出合乎逻辑的推测”。 【练习】选择assume，suppose，presume的正确形式填空。 1). I _______ that he has gone for a walk. 2). We _______ the situation will improve. 3). From the available data it may be _______ that the writer was ver
6、y famous in the 4th century. Keys: 1). assume 2). suppose 3). presumed 二.词性变化1. alternative n.[c]替换物 adj.选择性的，二中择一的 alternatively adv. 作为选择，二者择一 2. accuracy n.[u]精确性，正确度 accurate adj. 正确的，精确的inaccurate adj.不准确的 accurately adv.正确地，精确地inaccurately adv. 不准确地 3. assume vt.假定；设想； 采用；承担
