2016版高考总复习英语(人教版)常考句式课件：表猜测的句型.pptVIP

结束放映 返回目录 第*页 英语数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 结束放映 返回目录 第*页 数字媒体资源库 考点8 表猜测的句型 难 点 诠 释 典 型 例 题 高 考 闯 关 ◆ ◆ / Click to add Text / / 不可能 比can not 弱 / / / 有可能吗？ 比can 弱 考点1：对现在和未来的推测 (语气由强到弱) 否定式 疑问式 must should ought to can could 必定、必然 应该是 同should / 可 能 词 形 肯定式 可 能 不 比may not 弱 / / may might 或许、也许 比may还弱 典型例句 —Someone is knocking at the door. —It must be Mary. (I can read her step.) —It should be Mary. (She had made a promise to come.) —It can not (could not) be Mary. (She has gone abroad.) —Can / Could it be Mary? —It may / might be Mary. (but I am not sure.) —It may not /might not be Mary. ① must 常用于肯定句，一般不用于否定句 和疑问句;can常用 于否定句、疑问句或感叹 句中，表示疑惑、惊讶或不相信等意思.could 既可用于肯定句又可用于否定句和疑问句中。 ② could, should, might 不一定与过去时间有关， 而是表示可能性弱。 温馨提示 must have done (用于肯定句) 1 can have done (疑问、否定) could have done (肯定/否定/疑问） 2 may have done (肯定、否定) might have done (肯定、否定) 3 It must have rained last night. for the road was quite muddy. This article about travelling in USA can not have been written by him because he has never been there at all. —Do you still remember the day when we went to the Great wall. —I can not remember it well, but could it have been sometime last summer? It is too late, I think he may have gone to bed./He may not have finished his homework, for the light in his room is still on. 考点2:对过去的推测 ◆ ◆ 高 考 链 接 It__ have been Tom that parked the car here, as he is the only one with a car. (2009.上海卷) A. may B. can C. must D. should 答 案 解 析 句意:一定是汤姆把车停在这里的，因为只 有他有车。根据后半句as he is the only one with a car可知，此 句表达的是非常肯定的推测。must have done表示“过去一定做 了某事”。A、B两项表示并非十分肯定的推测;should have done 表示“本应该做某事而实际上未做”。答案:C ◆ ◆ 『高 考 闯 关』 1 You ___ be hungry already —you had lunch only two hours ago. A. may not B. cant C. mustnt D. neednt There is no light on—they ___ at home. A. cant B. mustnt C. neednt