Unit 3动词-ing形式作主语-2025-2026学年高中英语选修一语法重难点精讲（外研版）

选修1外研版 【语法专版】 重难点精讲 语法专版 【语法专题】动词-ing形式作主语专项突破 高中外研版选修1 语法精讲 语法概述：动词原形加-ing构成的短语， 在句中可作主语。 一、重难点讲解 重难点一：动词g形式作主语的基本用法及主谓一致讲解： 动词-g形式（动名词）置于句首作主语时，谓语动词用单数形式。动名词表示抽象、泛指的动 作，不强调动作的执行者或时间。 例句： ·Swimming is good for health.(游泳有益健康。) ·Reading aloud in the momning helps improve pronunciation.(晨读有助于提高发音。) 真题再现： 1.(2024北京海淀期中，外研版)_English every day is a good way to learn the language. A.Practise B.Practises C.Practising D.To practise 答案：C解析：空格处需用动名词作主语，谓语动词is为单数，故选Practising。 重难点二：t作形式主语代替动名词短语讲解： 当动名词短语较长时，常用t作形式主语，将真正的主语（动名词短语）置于句末，结构为“It+ be+形容词/名词+doing sth.”。 例句： ·It is important finishing homework on time..(按时完成作业很重要。) 。It is no use arguing with him.（和他争论没用。) 真题再现： 1.(2023 山东烟台月考，外研版)It is a waste of time computer games all day. 选修1外研版 【语法专版】 重难点精讲 A.play B.playing C.to play D.played 答案：B解析：t作形式主语，真正主语为动名词短语playing computer games,故选playing: 重难点三：动名词与不定式(todo)作主语的区别讲解： 动名词作主语强调习惯性、抽象性动作：不定式作主语强调具体、一次性动作或未发生的动作。 例句： ·Collecting stamps is his hobby..(集邮是他的爱好。)（习惯性动作） 。To collect stamps tomorrow is his plan.(明天去集邮是他的计划。)（具体动作） 真题再现： 1.(2024江苏南京期末，外研版)in the exam again made his parents angry. A.Cheating B.To cheat C.Cheated D.Cheat 答案：A 解析：句意为“考试作弊再次让他父母生气”，强调习惯性动作，用动名词Cheating 作主语。 重难点四：否定式及复合结构作主语讲解： 1.动名词的否定式在其前加not:Not doing sth.+谓语 2.复合结构：“形容词性物主代词/名词所有格+ong”(强调动作的逻辑主语) 例句： 。Not studying hard leads to failure.(不努力学习会导致失败。) ·His coming late made the teacher angry.(他迟到让老师生气了。) 真题再现： 1.(2023浙江杭州期中，外研版)_一careful with fire is necessary for everyone A.Be B.Being C.Not being D.Tobe 答案：B,解析：句意为“小心用火对每个人都有必要”，动名词短语Being careful with fire 作主语，故选Being。 2 选修1外研版 【语法专版】 重难点精讲 易错点综合演练 L单项选择（直击重难点) 1.too much time on social media is bad for your eyes. A.Spend B.Spends C.Spending D.To spend 2.It is no good about the problem without taking action. A.talk B.talking C.to talk D.talked 3.the piano every day makes her a better musician. A.Practice B.Practicing C.To practice D.Practiced 4.late for school again made the teacher very angry. A.Tom being B.Tom'sbeing C.Tom is D.Tom was Ⅱ.用所给词的适当形式填空（强化句型结构） 1.(not study)hard will lead to poor exam results. 2.It is important(finish)the project on time 3.(read)English novels helps improve reading skills. 4.My brother's(win)the competition surprised everyone. Ⅲ短文填空（综合运用动名词） 用括号内单词的适当形式填空，使短文完整通顺。（外研版教材课文改编） (exercise)regularly is good for health.Many people enjoy(jog)in the morning.(not eat) junk food can also help keep fit.For students,(balance)study and rest is important.(plan)daily activities well makes life more meaningful. V.连词成句（聚焦句型结构） 3 选修1外研版 【语法专版】 重难点精讲 1.is,swimming,good,for,health,( 2.no use,it,arguing,with,him,is,(. 3.his,made,late,coming,us,wait,( 4.to,collect,tomorrow,stamps,plan,his,is,( V.按要求改写句子（巩固否定、疑问句式） l.Swimming in the river is dangerous.(改为否定句) 一 2.It is important learning English well..(改为一般疑间句并作肯定回答) 3.His playing computer games wastes time.（对划线部分提问) 4.To give up now is not a good idea.（用动名词改写句子) 综合演练参考答案 I.单项选择：1.C2.B3.B4.B Ⅱ.用所给词的适当形式填空：1.Not studying2.finishing3.Reading4.winning 皿.短文填空： 1.Exercising 2.jogging 3.Not eating 4.balancing 5.Planning V.连词成句： 1.Swimming is good for health 2.It is no use arguing with him. 3.His coming late made us wait. 4.To collect stamps tomorrow is his plan 选修1外研版 【语法专版】 重难点精讲 V.按要求改写句子： 1.Not swimming in the river is dangerous. 2.Is it important learning English well?Yes,it is. 3.What wastes time? 4.Giving up now is not a good idea 5