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

高中人教版 【寒假专版】 选修2语法精讲 寒假专版 名词性从句专项训练 寒假语法易错点精讲 学段：高中教材：人教版年级：选修2 语法认知 名词性从句=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。 易错点讲解 易错点一：连接词hat与what的混用 讲解： that在名词性从句中仅起连接作用，无实际意义，不充当句子成分；what既起连接作用，又在从 句中充当主语、宾语或表语，有“..的（东西/事情/内容)”之意。 例句： -That he will come is certain.(that引导主语从句，不充当成分) -What he said is true.(what引导主语从句，在从句中作宾语，意为“他说的话”") 真题再现： (2024北京海淀区期中，人教版选修2)一surprised us most was._he could speak five languages fluently. A.What;that B.That;what C.What;what D.That;that 答案：A解析：第一空引导主语从句，且在从句中作主语，用what:第二空引导表语从句，从 句成分完整，用hat仅起连接作用。 (2023湖北武汉期末，人教版选修2)The teacher always tells us to think about_we can do to help others. A.that B.what C.which D.how 答案：B解析：空处引导宾语从句，且在从句中作do的宾语，用what表示“能做的事情”。 易错点二：whether与f的用法混淆 高中人教版 【寒假专版】 选修2语法精讲 讲解： whether可用于所有名词性从句（主语从句、宾语从句、表语从句、同位语从句），可与or not直 接连用：f仅用于宾语从句，且不可与or not直接连用（需分开为if..or not)。 例句： -Whether he will come or not is unknown.(主语从句用whether,不可用if) -Idon't know if/whether he will come.(宾语从句两者均可) -The question is whether we should leave now.(表语从句用whether) 真题再现： (2024山东青岛期中，人教版选修2)一we can finish the task on time depends on our cooperation. A.If B.Whether C.That D.What 答案：B解析：空处引导主语从句，表“是否”，用whether(if不可引导主语从句)。 (2023广东深圳期末，人教版选修2)She asked me一I would go to the party with her or not A.if B.whether C.that D.what 答案：B解析：宾语从句中与or not直接连用，用whether(if需改为if..or not)。 易错点三：名词性从句的语序错误 讲解： 名词性从句需用陈述句语序（主语+谓语），不可用疑问句语序（助动词情态动词+主语+谓语）。 例句： -Idon't know what his name is.(正确，陈述句语序：his name is) -Idon't know what is his name.(错误，疑问句语序) 真题再现： (2024江苏南京月考，人教版选修2)Could you tell me一the nearest post office is? A.where B.where is C.what D.what is 答案：A解析：空处引导宾语从句，用陈述句语序where the nearest post office is,选项中where 已包含陈述句语序结构。 (2023浙江杭州期中，人教版选修2)No one knows一the meeting will start. A.when B.when will C.that when D.when does 答案：A解析：宾语从句用陈述句语序when the meeting will start,选项中when对应正确语序。 易错点四：同位语从句与定语从句的混淆 高中人教版 【寒假专版】 选修2语法精讲 讲解： 同位语从句用于解释说明先行词（多为抽象名词，如fact,news,idea等）的具体内容，从句成分 完整；定语从句用于修饰先行词，从句中缺少主语、宾语或表语，需用关系代词(that/which/who 等)充当成分。 例句： -The news that he won the prize is true..(同位语从句，that无意义，不充当成分，解释news内容) -The news that he told me is true.(定语从句，that在从句中作told的宾语，修饰news) 真题再现： (2024四川成都期末，人教版选修2)We heard the news一our team had won the game.. A.that B.which C.who D.what 答案：A解析：空后从句解释news的具体内容，成分完整，为同位语从句，用that(不可用which)。 (2023湖南长沙期中，人教版选修2)Do you remember the day一_we visited the museum? A.that B.when C.what D.if 答案：B解析：空后从句修饰先行词the day,且从句中缺少时间状语(we visited the museum on the day),为定语从句，用when(关系副词)。 易错点五：t作形式主语/宾语时的遗漏 讲解： 当主语从句较长时，常用it作形式主语，将真正主语从句后置（结构：It+be+形容词/名词+ht 从句)：当宾语从句较长时，常用t作形式宾语，将真正宾语从句后置（结构：主语+谓语+t+ 形容词/名词+that从句)。 例句： -It is important that we study hard.(it作形式主语，真正主语为that we study hard) -I think it necessary that we practice English every day..(it作形式宾语，真正宾语为that we practice English every day) 真题再现： (2024安徽合肥期中，人教版选修2)一is a pity that you didn't attend the lecture. A.What B.That C.It D.This 答案：C解析：用it作形式主语，真正主语为that you didn't attend the lecture(It is a pity that..为 固定句型)。 (2023河南郑州期末，人教版选修2)He found一difficult_he would finish the work in two days. A.it;that B.that;it C.it;if D.that;whether 答案：A解析：第一空用it作形式宾语，第二空引导真正宾语从句（成分完整），用ht。 3 高中人教版 【寒假专版】 选修2语法精讲 易错点综合演练 综合演练 1.单项选择（直击易错点) l._made her sad was._she failed the exam.(易错点一) A.What;that B.That;what C.What;what D.That:that 2.I wonder_he will arrive on time or not..(易错点二) A.if B.whether C.that D.what 3.Can you tell me._the meeting will begin?(易错点三) A.when B.when will C.that when D.when does 4.The fact一the Earth is round is known to all..(易错点四) A.that B.which C.who D.what Ⅱ.用适当连接词填空（强化易错点区分） l._he said at the meeting surprised everyone.(易错点一) 2.I'm not sure_I should accept the invitation.(易错点二) 3.She asked me_the nearest hospital was.(易错点三) 4.The news一our team won the game spread quickly.(易错点四) Ⅱ.短文填空（综合运用四大易错点） 用适当连接词填空，使短文完整通顺： -we need most now is more time.Many students are worried aboutthey can finish homework on time.Teachers often tell usit is important to manage time well.The idea-we should make a study plan is helpful.However,some students don't knowto start. V句型转换（聚焦易错句式） l.He will come to the party.It is certain.(合并为主语从句) 2.She can speak three languages.We all know that.(合并为宾语从句) 3.When will the train arrive?Could you tell me?(合并为宾语从句) 4.The news is true.He has passed the exam.(合并为同位语从句) 参考答案 4 高中人教版 【寒假专版】 选修2语法精讲 I单项选择 1.A2.B3.A4.A Ⅱ.用适当连接词填空 1.What 2.whether 3.where 4that III短文填空 1.What 2.whether 3.that4.that5.how V.句型转换 1.That he will come to the party is certain. 2.We all know that she can speak three languages. 3.Could you tell me when the train will arrive? 4.The news that he has passed the exam is true. 5