Unit 5 Period 2 Learning About Language-【优学精讲】2026-2027学年高中英语选择性必修一同步教参（人教版）

本高中英语讲义聚焦主语从句核心知识点，系统梳理从属连词（whether/that）、连接代词（what/who/whichever）、连接副词（how/where/when）的用法特点，深入解析it作形式主语的四种句型（形容词、名词、过去分词、不及物动词），并强调陈述语序和主谓一致等注意事项，构建从基础到特殊结构再到易错点的完整学习支架。 该资料以教材实例（如P50相关句子）为依托，通过语法填空与句子改写练习，助力学生提升语言理解与表达能力，在分析连接词功能和主谓一致规则中培养严谨的思维品质。课中辅助教师明晰教学逻辑，课后促进学生自主巩固，有效弥补知识盲点。

Period 2　Learning About Language 主语从句 一、主语从句的连接词及用法特点 (一)从属连词 (1)(教材P50)However, whether it was possible to develop a hybrid of self-pollinating plants such as rice was a matter of great debate. 然而，是否有可能培育出水稻等自花授粉植物的杂交种，是一个有很大争议的问题。 (2)That she won the first prize in the competition surprised all of her classmates.　她在比赛中获得了一等奖，这让她所有的同学都感到惊讶。 1．whether引导主语从句时，在从句中不充当任何成分，意为“是否”，当从句不在句首时，也可用if引导主语从句。 2．that引导主语从句时，在从句中不充当任何成分，也没有意义，只起连接主句和从句的作用。 (二)连接代词 (1)(教材P50)However, what concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat. 然而，最让他忧心的是，农民经常歉收，有时甚至严重缺粮。 (2)Who will be selected as the new student union president hasn't been announced yet. 谁会被选为新一届学生会主席，目前还没有公布。 (3)Whichever book you choose from the shelf can be taken home and kept for a week. 你从书架上选的任何一本书都可以带回家借阅一周。 连接代词，如what、whose、who(m)、which、whatever、whichever、who(m)ever等引导主语从句，在从句中可以充当主语、宾语、表语或定语。 (三)连接副词 (1)(教材P50)How this could be done was a challenging question at the time. 如何做到这一点在当时是一个具有挑战性的问题。 (2)Where the missing hiker was found shocked everyone because it was a remote and dangerous valley. 失踪的徒步旅行者被找到的地方让所有人都很震惊，因为那是一个偏远且危险的山谷。 (3)When we will set off for the summer camp depends on the weather forecast of the departure day.　我们何时出发去夏令营取决于出发当天的天气预报。 连接副词，如when、where、why、how等引导主语从句，在从句中作状语。 二、it作形式主语的主语从句 (1)It is a pity that the little girl didn't receive the gift she had been looking forward to for a long time.　令人惋惜的是，那个小女孩没能收到她期盼已久的礼物。 (2)It is believed that regular reading can broaden people's horizons and enrich their spiritual world. 人们认为，经常阅读能够开阔人们的眼界，丰富人们的精神世界。 (3)It seemed that it was going to rain suddenly, for the sky turned dark in a minute.　天好像马上就要下雨了，因为天空一转眼就变暗了。 句　型 说　明 It＋系动词＋形 容词＋主语从句． 常用于此句型的形容词有important、 (un)likely、 possible、 necessary、 natural、 wrong等 It＋系动词＋ 名词(词组)＋ 主语从句． 常用于此句型的名词(词组)有a fact、 an idea、 an honour、 a wonder、 no wonder、 a pity等 It＋系动词＋ 过去分词＋主语从句． 常用于此句型的过去分词有known、 proved、 said、 decided、 suggested、 thought等 It＋不及物动 词＋主语从句． 常用于此句型的不及物动词有appear、 happen、 seem、 occur、 matter等 三、主语从句中应注意的问题 (1)Whoever breaks the school rules is going to be punished by the discipline committee. 任何违反校规的人，都将受到纪律委员会的处分。 (2)What we need to prepare for the camping trip are tents, sleeping bags and waterproof shoes. 我们需要为露营旅行准备的东西是帐篷、睡袋和防水鞋。 (3)Whether the project will be completed on time and whether it will meet all specifications are still open questions. 项目是否能按时完成以及它是否能满足所有规格仍然是未解决的问题。 (4)How and why he came to this city is a story of struggle and success. 他如何来以及为何来到这座城市是一个关于奋斗与成功的故事。 1．从句的语序：在任何情况下，主语从句都用陈述语序。 2．主谓一致 (1)主语从句作主语时，主句的谓语一般用单数形式；但what和who引导主语从句时，有时主句谓语的数应与主句中作表语的名词保持一致。 (2)如果由and连接两个或两个以上的主语从句作主语时，谓语动词用复数形式；由两个或多个连接词引导一个主语从句时，谓语动词用单数形式。 Ⅰ.单句语法填空 1．Whether the new library will be open on weekends is a question many students are asking. 2．When and where the ancient king held his coronation ceremony is(be) a mystery that historians are eager to solve. 3．Whoever gets the highest score in this exam will receive a special award. 4．It appeared that the problem was much more difficult than we had expected at first. 5．When/Whether/How the old bridge will be repaired is a key concern for the residents living nearby. 6．Where the ancient city used to stand is still a puzzle that archaeologists are trying to solve. 7．Whichever volunteer activity you sign up for will help you gain valuable social experience. 8．Who left the classroom window open last night is still a mystery to all of us. 9．That we need to improve our communication skills is obvious in modern society. 10．What we could do was to go back along the previous track slowly. Ⅱ.语法与写作(连接句子或改写句子) 1．Why has the ancient building stood for centuries? It has attracted the attention of many architects. Why the ancient building has stood for centuries has attracted the attention of many architects. 2．When and where will the two teams have their second match? It is still under negotiation between the two clubs. When and where the two teams will have their second match is still under negotiation between the two clubs. 3．Shall we go picnicking tomorrow? It depends on the weather. Whether we will go picnicking tomorrow depends on the weather. 4．Every student should listen carefully to the teacher in class, which is important. It is important that every student should listen carefully to the teacher in class. 5．As we all know, hard work is the key to success and there is no shortcut to achieving our goals. What we all know is that hard work is the key to success and that there is no shortcut to achieving our goals. 学科网（北京）股份有限公司 $