Unit 2名词性从句-2025-2026学年高中英语选修二语法重难点精讲（人教版）

高中选修2人教版 【语法专版】 名词性从句精讲 语法专版 【语法专题】名词性从句专项突破 高中人教版选修2 语法精讲 语法概述：在句子中起名词作用的从句，在句中可作主语、宾语、表语、同位语。 重难点讲解 重难点一：名词性从句的连接词选用讲解： 名词性从句（主语从句、宾语从句、表语从句、同位语从句）需根据从句是否缺成分及意义选择连 接词。不缺成分且意义完整用hat(宾语从句中可省略)：缺成分且指物用what,指人用who/whom: 表“是否”用whether/if(if不用于句首、介词后及与or not直接连用)：表时间用whem,地点用 where,.原因用why,方式用how。 例句： ·What he said surprised everyone..(主语从句，缺宾语用what) 。Idon't know if/whether he will come..(宾语从句，表“是否”) ·The problem is how we can solve it..(表语从句，表方式用how) 真题再现： 1.(2024 北京海淀期中，人教版)_we will go camping tomorrow depends on the weather A.If B.Whether C.That D.What 答案：B解析：主语从句位于句首表“是否”，只能用Whether,不能用f。 2.(2023湖北武汉月考，人教版)She asked me_I had seen her keys. A.that B.what C.if D.which 答案：C解析：宾语从句表“是否看到钥匙”，用f引导。 高中选修2人教版 【语法专版】 名词性从句精讲 重难点二：宾语从句的时态呼应讲解： 主句谓语为现在时（一般现在时、现在进行时、现在完成时），宾语从句可根据实际情况用任意时 态；主句为过去时（一般过去时、过去进行时），宾语从句需用相应过去时态（一般过去时、过去 进行时、过去完成时、过去将来时)：从句表客观真理时用一般现在时。 例句： 。He says he will leave tomorrow.(主句现在时，从句将来时) ●She told me she had finished her homework.(主句过去时，从句过去完成时) ·Our teacher said the earth goes around the sun.（客观真理用一般现在时) 真题再现： l.(2024江苏南京期末，人教版)My father told me that light一faster than sound. A.travels B.traveled C.will travel D.is traveling 答案：A解析：从句表客观真理，用一般现在时。 2.(2023广东广州期中，人教版)I didn't know if he_to the party the next day. A.will come B.comes C.would come D.came 答案：C解析：主句过去时，从句“第二天来”用过去将来时would come。 重难点三：主语从句的语序与形式主语t讲解： 主语从句用陈述语序，即“连接词+主语+谓语”：当主语从句较长时，常用t作形式主语，将真 正主语从句后置，结构为It+be+形容词/名词/过去分词+hat从句。 例句： ●When the meeting will start is not known.(主语从句，陈述语序) ·It is important that we should learn English well.(it作形式主语，真正主语为that从句) 真题再现： 1.(2024 浙江杭州月考，人教版)It is necessary_we protect the environment. A.that B.what C.if D.how 答案：A解析：it作形式主语，从句不缺成分用that引导。 2 高中选修2人教版 【语法专版】 名词性从句精讲 2.(2023 山东济南期末，人教版)_he succeeded in the exam made his parents very happy.. A.What B.That C.How D.Whether 答案：B解析：主语从句结构完整，用hat引导，hat不可省略。 重难点四：同位语从句与定语从句的区别讲解： 同位语从句修饰抽象名词（如newS,fact,idea等)，对名词内容进行解释说明，连接词that无意义 不充当成分：定语从句修饰先行词，连接词（关系代词副词)在从句中充当成分。 例句： ·The news that he won the game is true..(同位语从句，that不充当成分，解释news内容) 。The news that he told me is true.(定语从句，that指代news在从句中作宾语) 真题再现： 1.(2024 四川成都期中，人教版)We heard the news our team had won the match, A.which B.that C.what D.where 答案：B 解析：从句解释news内容，为同位语从句，用that引导。 2.(2023 湖南长沙期末，人教版)This is the fact_he explained to us yesterday. A.that B.what C.how D.when 答案：A 解析：从句中explained缺宾语，修饰先行词fact,为定语从句，用that引导。 重难点五：表语从句的常见结构讲解： 表语从句位于系动词(be,seem,look等)后，常用结构有：The reason..is that.(不用because):It seems that..（似乎)：That'swhy.(那就是…的原因)。 例句： 。The reason for his absence is that he was ill.(不用because) ●It seems that she knows the truth.(seem后接表语从句) ●That's why I didn't attend the meeting.(表结果) 真题再现： 高中选修2人教版 【语法专版】 名词性从句精讲 1.(2024 安徽合肥月考，人教版)The reason why he was late was_he missed the early bus. A.because B.that C.why D.what 答案：B解析：The reason..is that..为固定结构，用hat引导表语从句。 2.(2023河南郑州期末，人教版)It looks it is going to rain soon. A.if B.that C.as D.when 答案：B 解析：It looks that.…表“看起来…”，that引导表语从句。 易错点综合演练 I单项选择（直击重难点） 1.he will come to the party depends on his parents'permission A.If B.Whether C.That D.What 2.Our teacher told us that the sun in the east. A.rises B.rose C.will rise D.is rising 3.It is importantwe should learn to communicate with others. A.that B.what C.if D.how 4.The news_our team won the game made us excited. A.which B.that C.what D.where 4 高中选修2人教版 【语法专版】 名词性从句精讲 Ⅱ用所给词的适当形式填空（强化句型结构） 1.She said she (finish)the work before 5 o'clock yesterday. 2.I don't know if he (come)to see us tomorrow. 3.(be)there a meeting tomorrow morning? 4.The reason why he was late was that he(miss)the early bus. 5.My father(tell)me that he had been to Beijing twice. Ⅲ.短文填空（综合运用名词性从句) 用适当的连接词填空，使短文完整通顺。 I have a problem.I don't know 1.I should choose between the two books.My friend suggested 2. I ask the teacher for advice.The teacher told me 3.the first book was more suitable for me.I am sure 4.this book will help me a lot.Now I am thinking about 5.I can finish reading it in a week. V.句型转换（聚焦句型结构） l.He will go to America next year.(改为主语从句) to America next year is certain. 2.She asked me,Do you like English?”(改为宾语从句) She asked meI English. 3.The earth is round.Our teacher told us.(合并为宾语从句) Our teacher told us the earth round. 4.He didn't pass the exam.The reason was that he was lazy.(合并为表语从句) The reason why he didn't pass the exam_he was lazy. V.翻译句子（巩固名词性从句用法） 1.他所做的事情让我们很感动。 moved us a lot 2.我不知道他明天是否会来。 I don't know come tomorrow. 3.我们相信他会成功的。 We believe succeed. 4.问题是我们如何在这么短的时间内完成这项工作。 The problem is the work in such a short time. 高中选修2人教版 【语法专版】 名词性从句精讲 参考答案 I.单项选择：1B2.A3.A4B Ⅱ.用所给词的适当形式填空：1 had finished2.will come3.Is4.had missed5.told Ⅲ.短文填空： 1.which/what 2.that 3.that 4.that 5.whether/how IV.句型转换： 1.That he will go 2.if/whether;liked 3.that;is 4.was that V.翻译句子： 1.What he did 2.whether/if he will 3.that he will 4.how we can finish 6