莱山新媒体
2023-06-23
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表示惊讶 对已经发生的情况表示惊讶或不理解，通常含有“竟然”的意味。例如： It is a pity that he should have failed in the exam. 他考试竟然没有及格，真是可惜。 I can’t think why he should have said that it was my fault. 我真不明白，他怎么竟然说这是我的过错。 It’s strange that he should have left without telling us. 奇怪，他竟没有和我们说一声就走了。 用于虚拟语气 在虚拟条件句中，当谈论过去的情况时，其句型通常是：主句用“could/would/should /might +have+过去分词”，if从句用过去完成时。虚拟语气的“should+have+过去分词”结构，仅限于使用第一人称。例如： If I had seen her I should have invited her. 我当时要是看到她的话我本会邀请她的。 If I had received the present, I should have thanked her. 如果我收到了礼物，我是应当向她道谢的。 I should not have laughed if I had thought you were serious. 如果我想到你是认真的，我就不会笑了。 背单词的好方法 随时随地背单词 不知不觉背单词 英语中类似 It is said that...的常用句式知识点总结 It is said that…（据说……）是英语中的常用句式，在高考试题中经常出现。如： It is said that the early European playing-cards were designed for entertainment and education. 据说早期欧洲的纸牌是为娱乐和教育设计的。 It is said that dogs will keep you company for as long as you want when you are feeling lonely. 据说当你感觉孤单时，狗会一直陪伴你，你需要它陪你多久它就陪你多久！ It’s said that quite a few boys in your school like playing football in their spare time, though others prefer basketball. 听说你们学校有不少男孩子喜欢在业余时间踢足球，而其他人则喜欢打篮球。 It is said that they have swum to the island from the continent, but they couldn’t have done it because the ocean in between is too wide. 据说他们已从大陆游到岛上，但他们不可能做到这一点，因为其间的海面太宽了。 类似it is said that…句式的特点是：均以it作形式主语，均在被动谓语后接that从句（其实为主语从句），译成汉语时通常用“据……”表示，如根据主句谓语动词的意思不同可以译成“据说”“据信”“据估计”“据报道”“据传闻”等。这类句式比较常见的有以下一些： needn't have done的用法 needn't have done表示过去没有必要做某事，意为“本来不必做某事”（但实际做了）。 I needn't have taken the umbrella, for the weather is fine.天这么好，我本没必要带雨伞的。 You needn't have told her again.I have told her already.你当时没必要再告诉她了。我已经告诉过她了。 I needn’t have gone to the office yesterday. 昨天我没必要去办公室。 “need +完成时”仅限于否定句或疑问句，不用于肯定句。又如： I was the first to get there. I needn’t have gone there so early. 我是第一个到那儿的人，我本来不必去那么早的。 You needn’t have mentioned it. 你没有必要提及此事的。 You needn’t have come in person. 你当时不必亲自来的。 Need you have scolded him so severely? 你有必要这样严厉地批评他吗? Need he have paid so much? 他当时真需付那么多钱吗? It is believed that… 据说……，据信…… It’s believed that the troops have already crossed the border. 信军队已越过边界。 It is believed that the couple have left the country. 据信那对夫妇已离开了这个国家。 It is claimed that… 据称…… It is claimed that current levels of pesticide do not pose a threat to health. 据称当前杀虫剂的含量不会对健康构成威胁。 It’s claimed that they produce the best athletes in the world but I think that’s impossible. 据称，他们可以培养出世界上最好的运动员，但我认为那是不可能的。 It is estimated that… 据估计…… It is estimated that smoking causes 100,000 deaths every year. 估计每年有100,000人由于吸烟而死亡。 It is estimated that four million viewers watched the programme. 据估计有400 万观众收看了这一节目。 It ________ be the postman at the door. It's only six o'clock. A. mustn't B. can't C. won't D. needn't 参考答案与解析： 答案：C 答案：A 答案：D 答案：A 解析：根据语境可知,此处表示一种可能性不大的推测, 因此应用might一词,意为“可能,或许”.故答案选A. 句意：——你没必要带伞,不会下雨的.——哦,我不知道,可能会下雨. 答案：B 解析：考查情态动词. 根据后半句“because you know a lot of words”可知,前半句表示否定推测,由此可知,答案B正确.couldn't意为“不可能”；.may表示推测时语气最弱,意为“可能”; should应该; needn't不必要,均不符合语境,故排除. 句意：练习中的这个问题不可能是由词汇量匮乏引起的,因为你的词汇量还是挺大的. 答案：A 答案：B 解析：考查情态动词。 can't表示“对现在状况的十分确定的否定猜测”意为“不可能”, 符合语境。mustn't表示“禁止, 不允许”; won't表示“不愿意”; needn't表示“不需要”, 均不符合语意, 故选B。 句意：不可能是邮递员的, 现在才6点。 
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