03-Unit 5 Period 2 Learning About Language-【优学精讲】2025-2026学年高中英语选择性必修第一册教用课件(人教版)

UNIT 5 WORKING THE LAND 1 Period 2 Learning About Language 2 主语从句 返回导航 3 1 要义详析 探究语法 2 课堂微练 即时检验 4 PART 01 要义详析 探究语法 5 一、主语从句的连接词及用法特点 （一）从属连词 （1）（教材P<m></m>）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。 返回导航 6 （2）That football is such an interesting game to play is perhaps the basis of its popularity. 足球是一项如此有趣的运动，这也许是它受欢迎的基础。 返回导航 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。 返回导航 8 （二）连接代词 （1）（教材P<m></m>）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，最令他忧心的是，农民经常歉收，有时甚至严重缺粮。 （2）Who will win the game is difficult to guess， because the two players are equal with each other. 谁会赢得比赛很难猜测，因为这两位选手平分秋色。 返回导航 9 （3）Whichever candidate gets the most votes will be elected as the new president of the student council. 获得最多票数的候选人将被选为新的学生会主席。 返回导航 10 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。 返回导航 11 （三）连接副词 （1）（教材P<m></m>）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 I will spend my summer vacation has not been decided yet. 我将在哪里度过我的暑假还没有决定。 返回导航 12 （3）When the delayed flight will take off depends much on the weather. 延迟的航班什么时候起飞主要取决于天气状况。 返回导航 连接副词，如when、where、why、how等引导主语从句，在从句中作状语。 返回导航 14 二、it作形式主语的主语从句 （1）It is very important that children receive a well-rounded education to prepare them for the challenges of the future. 为了应对未来的挑战，孩子们接受全面的教育非常重要。 （2）It is no wonder that your students have made such great progress. 难怪你的学生取得了如此大的进步。 返回导航 15 （3）It appeared that the meeting would be postponed due to several key participants being unavailable. 看起来会议将会推迟，因为几位关键与会者无法出席。 返回导航 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 返回导航 17 句型 说明 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 续表 返回导航 三、主语从句中应注意的问题 （1）Who he will go to Beijing with remains unknown. 他将和谁一起去北京还不知道。 （2）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。 （3）What are often described as the key benefits of exercise are improving physical health and enhancing mental well-being. 通常被描述为锻炼的关键好处的是改善身体健康及增强心理健康。 返回导航 19 （4）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。 返回导航 20 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。 返回导航 21 PART 02 课堂微练 即时检验 22 Ⅰ.单句语法填空 1.______ we could do was to go back along the previous track slowly. 2.Why and how he has finished the task ________ （remain） unknown. 3.What they will do and how they will do it ____ （be） unknown to everyone present. What remains are 返回导航 23 4.___ was no wonder that my fellow guests had only a few bites of each dish. 5._________ makes an attempt to cheat in order to get into good schools will be punished. It Whoever 返回导航 6.Whether it will do us harm or good ________ （remain） to be seen. 7.First of all， ______ we can do is to place importance on our daily actions. 8._____ people cut down too many trees destroyed the balance of nature. 9._______ part of the country he will travel to needs discussing. 10._______the treasure is hidden remains a mystery that has puzzled explorers for centuries. remains what That Which Where 返回导航 25 Ⅱ.语法与写作（用主语从句升级下列句子） 1.Why did they suddenly disappear？It still remains a mystery. →__________________________________________________ 2.He said a lot of words at the meeting. They were very attractive. →____________________________________________ 3.It was a pity. You missed such a good lecture. →______________________________________________ Why they suddenly disappeared still remains a mystery. What he said at the meeting was very attractive. It was a pity that you missed such a good lecture. 返回导航 26 4.We should practise oral English for an hour every day. It is our rule. →____________________________________________________________________ It is our rule that we should practise oral English for an hour every day. 5.Shall we go picnicking tomorrow？It depends on the weather. →__________________________________________________________ Whether we will go picnicking tomorrow depends on the weather. 返回导航 27 $