Unit 5 Working the Land Discover Useful Structures 主语从句学案-2023-2024学年高中英语人教版（2019）选择性必修第一册

E1 Unit5 Working The Land Grammar Motto: Man, you should work like a cow, like land, dedication. 人，就应该像牛一样劳作，像土地一样奉献。 Ⅰ. Learning aims 1.To master the usages of subject clause. 2.To use subject clause in communication and writing. Ⅱ Self-learning guidance and test Learning guidance Tests 1. Lead-in Enjoy a song. 2. Important Points 1、 主语从句的定义 主语从句就是在复合句中作_________的名词性从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。 二．主语从句的引导词 类别 例词 说明 从属连词 That, whether, if. 两者在从句中均不作成分，只起连接作用；that无实义，whether表示“是否”。 连接代词 Who, what, which, whoever, whatever, whose, whomever, whichever,whom等. 在从句中作主语、宾语、表语、定语等成分。 连接副词 When, where, how, why, wherever, whenever等. 在从句中作时间、地点、方式、原因状语等成分。 学法指导： 依据“缺什么补什么”原则确定正确的连词。 所谓“缺什么补什么”是指从句与连词之间的关系。 如果句子中缺主语，指人用_______，指物用________。 如缺宾语，指人用________，指物用_________。 如缺时间状语用______；地点状语用______。 原因状语用______；方式状语用______。 如缺定语用______或______。 如什么都不缺用__________，__________表“是否”。 三、it作形式主语 当句子主语过长时，为保持句子平衡，避免头重脚轻，常把主语从句后置，而用形式主语it代替。it作形式主语时常用于以下句型： 句型 说明 It＋is/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＋is/系动词＋名词＋主语从句 常用于此句型的名词有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(特殊动词)＋主语从句 常用于此句型的动词有appear, happen, seem, occur, matter等。 Exercise: 1.___________happened that they were out that day. 2. __________ is very important that a student_______________(learn)English well. 3. ___________ is suggested that the meeting ____________(put) off. Ⅲ. Consolidation Level A 单句语法填空 1. ______ has helped to save the drowning girl is worthy of being praised. 2. It is strongly recommended _______ I set more practical and specific goals. 3. It ______________ (acknowledge) that students should be evaluated in terms of overall quality. 4. _______ she comes or not makes no difference. 5. _______ I finished doing the homework in such a short time surprised them all. 6. Just like some Europeans celebrate Spri