Unit 5 Section Ⅳ Writing-(配套教参)【精讲精练】2025-2026学年高中英语选择性必修第四册(外研版)

本讲义聚焦高中英语“介绍未解之谜”的说明文写作，构建“写作步骤（现象地点-特征描述-科学探索）—句式模板（首段现象简述、中段观点分析、尾段个人认识）—审题构思（体裁/人称/时态）—句式升级（如定语从句、分词作状语）—范文示例（“大脚怪”写作）”的学习支架，系统衔接写作基础与应用。 资料以“模板支架+实例演练”为特色，通过首中尾段句式模板（如“Some witnesses claimed that...”）、句式升级训练（如合并定语从句），提升学生语言能力（规范表达复杂句式）与思维品质（分析写作逻辑）。“大脚怪”范文从审题到成篇的完整示范，课中辅助教师系统教学，课后助力学生自主复习，查漏补缺。

Unit 5　Section Ⅳ　Writing [对应学生用书P129] 介绍未解之谜 介绍未解之谜，属于说明文的范畴。写此类文章，不能凭空杜撰，对未解之谜的现象描述要有确切来源。对此的推测和解释也必须要有科学依据。写作时可按如下步骤进行： 1．简单介绍奇异现象或事物及其发生的地点； 2．详细叙述该奇异现象或事物的特征和神秘之处； 3．描述对此所做的科学探索，介绍科学推测。(根据情况，也可以换成自己的感受、心得、评价等。) 首段：简述某种神秘自然现象 ①Some witnesses claimed that... ②There have been dozens of reports that... ③There are many guesses about this phenomenon，but they are not based on theories or facts. ④Due to a lack of concrete evidence/In the absence of hard evidence，some people even claim it was a certain kind of supernatural powers! There are many mysteries about dinosaurs for which we long to find explanations. 中段：各界不同看法或观点 ①By recent research，we can learn that... ②Some people believe in its existence，because... ③How ancient builders managed to build these massive structures has never been fully answered but the effort clearly required brains and brawn. ④Based on a large amount of evidence，scientists conclude that the science behind the mystery is not complicated. 尾段：描述作者个人对此现象的认识 ①Personally，I (don't) believe... ②As far as I am concerned，I think... ③In my point of view，I believe... “大脚怪 (Bigfoot)”一直引发人们的热议。请根据所给的文字提示写一篇英语短文来参与讨论。 神秘生物 描述 在北美地区被首次看到，像猿(ape)，平均身高2米，重量在500磅以上，全身覆盖棕色或红色毛，头和眼睛很大，脚印长达0.6米 发现情况 科学家和研究人员找到了与它相关的粪便(faeces)、毛发等 结论 无其他证据证明其存在，也许这只是当地传说，以吓唬徒步者或猎人 2．可以适当增加细节，以使行文连贯。 [审题构思] 体裁 说明文 人称 第三人称 时态 一般现在时、一般过去时和现在完成时 内容 第一部分：神秘生物出现的地点； 第二部分：根据所给内容，描述其神秘之处； 第三部分：科学家的相关研究情况及结论 1．大脚怪是世界著名的神秘生物之一。 The Bigfoot is one of the world­famous mysterious creatures． 2．它是在北美洲被首次看到的。 It was first seen in North America. 3．据说它平均身高2米。 It was said to be an average of 2 metres tall. 4．它重量在500磅以上。 It weighed over 500 pounds. 5．它全身覆盖棕色或红色的毛发，眼睛和头很大。 It was covered in brown or red fur with large eyes and a big head. 6．科学家和研究人员团队已经去那里进行了调查。 Teams of scientists and researchers have gone there to make an investigation． 7．他们已经找到了与它相关的东西，如粪便、毛发等。 They have found things related to it，such as faeces，fur and so on. 8．但是到目前为止，没有其他证据证明其存在。 However，so far there has been no other evidence to prove its existence. [句式升级] 9．将句1和句2合并为含有非限制性定语从句的句子 The Bigfoot，which was first seen in North America，is one of the world­famous mysterious creatures. 10．将句3和句4合并为含有现在分词作状语的句子 It was said to be an average of 2 metres tall，weighing over 500 pounds. 11．将句6和句7合并为含有定语从句的句子 Teams of scientists and researchers who have gone there to make an investigation have found things related to it，such as faeces，fur and so on. [连句成篇] One possible version： The Bigfoot，which was first seen in North America，is one of the world­famous mysterious creatures. Witnesses described it as an ape­like creature.It was said to be an average of 2 metres tall，weighing over 500 pounds and was covered in brown or red fur with large eyes and a big head.Footprints up to 0.6 metres long have been found. Teams of scientists and researchers who have gone there to make an investigation have found things related to it，such as faeces，fur and so on.However，so far there has been no other evidence to prove its existence.Some people think it may be just folk tales or stories to terrify hikers and hunters in North America. 学科网（北京）股份有限公司 $