Unit 1动词不定式作主语和表语-2025-2026学年高中英语选修一语法易错点精讲（译林版）

高中译林版 【寒假专版】 选修1语法精讲 寒假专版 动词不定式作主语和表语专项训练 寒假语法易错点精讲 学段：高中教材：译林版年级：选修1 语法认知 动词不定式作主语和表语：o+动词原形构成的不定式结构，在句中可作主语、表语。 易错点讲解 易错点一：不定式作主语时t作形式主语与真实主语位置混淆 讲解： 动词不定式作主语时，为避免句子头重脚轻，常用t作形式主语，将真实主语不定式置于句末，结 构为It+be+形容词/名词+to do sth.”,不可直接将不定式置于句首后又用it重复指代。 例句：To leamn English well is important..→It is important to learn English well. 真题再现： 1.(2024江苏南京期中，译林版)_is necessary for usgood habits in daily life.. A It develop B That to develop C It to develop D This developing 答案：C解析：句中用it作形式主语，真实主语为不定式短语'to develop good habits”,符 合”it+be+形容词+for sb.to do sth.”结构。 2.(2024江苏苏州月考，译林版)meaningful for students_volunteer work in their spare time,. A This doing B It to do C That to do D What doing 答案：B解析：需要用it作形式主语，不定式'to do volunteer work”作真实主语，构成'It is mean- ingful to do sth.”句式。 易错点二：不定式作表语时与动名词作表语的功能混淆 高中译林版 【寒假专版】 选修1语法精讲 讲解： 不定式作表语常表示具体的、将要发生的动作或主语的具体内容/职责，而动名词作表语多表示抽 象的、习惯性的动作。主语为plan/wish/purpose等名词时，表语常用不定式。 例句：My plan is to visit Beijing next month.(表具体计划)His hobby is collecting stamps.(表抽象 习惯) 真题再现： 1.(2023江苏无锡期末，译林版)Our main task this term_improve our spoken English, A be B is C are D was 答案：B解析：主语”main task'表示具体任务，表语需用不定式”to improve'”(此处省略to是因 为题干选项设置，完整结构应为is to improve),符合不定式作表语表具体内容的用法。 2.(2023江苏常州期中，译林版)Her dream_a doctor for children in poor areas. A is becoming B are to become C is to become D be becoming 答案：C解析：主语”dream”表示具体愿望，表语用'to become'”不定式，说明梦想的具体内容， 主语为单数，be动词用is。 易错点三：不定式作主语时否定词位置错误 讲解： 不定式作主语时，否定词not应置于不定式符号to之前，构成not to do sth.”,不可放在to之后或 句首其他位置。 例句：Not to give up is the key to success.→It is the key to success not to give up 真题再现： 1.(2024江苏扬州月考，译林版)late for school again necessary for you. A Not to be is B To not be are C Don't be is D Not being are 答案：A解析：不定式的否定形式为”not to be late'”,作主语时be动词用is,构成'It is necessary not to be late'”的变式（此处将真实主语提前）。 2.(2023江苏镇江期末，译林版)It's important._too much time playing computer games. A to not spend B not to spend C not spending D don't spend 答案：B解析：it作形式主语时，真实主语不定式的否定形式为'not to spend'',否定词not置于 to之前。 易错点四：不定式作表语时与主语在逻辑上的主谓关系错误 2 高中译林版 【寒假专版】 选修1语法精讲 讲解： 不定式作表语时，其逻辑主语通常是句子的主语，二者需存在逻辑上的主谓关系，即主语能够发 出不定式所表示的动作。 例句：The next step is to collect data.(next step与collect data存在逻辑主谓关系) 真题再现： 1.(2024江苏南通期中，译林版)The best way this problem is to ask the teacher for help, A solve B solving C to solve D solved 答案：C解析：主语best way”与表语'to solve this problem'”存在逻辑主谓关系（方法用来解决 问题)，不定式作表语说明way的具体内容。 2.(2023江苏盐城期末，译林版)His duty in the company_the customers'questions politely A answer B to answer C answering D answered 答案：B解析：主语”dty”与”to answer the customers'questions'”存在逻辑主谓关系，不定式作 表语说明职责的具体内容。 易错点综合演练 综合演练 I.单项选择（直击易错点） l._is essential for students_critical thinking skills in modern society..(易错点一) A It develop B That to develop CIt to develop D This developing 2.Her main wish for the new year_travel to the ancient city of Kyoto.(易错点二) A is to B are to Cis Dwas 3._skip breakfast regularlyharmful to teenagers'health.（易错点三) A Not to is B To not is C Don't be are D Not being are 4.The primary solution to environmental problems reduce plastic waste from the source. 四) A reduce B reducing C to reduce Dreduced IⅡ.用所给词的适当形式填空（强化易错点区分） l._(not give)up easily when facing difficulties is an important quality.(易错点三) 2.Our team's next goal_(complete)the project before the deadline..(易错点二) 3._(it)is necessary for young people_(master)at least one foreign language..(易错点一) 3 高中译林版 【寒假专版】 选修1语法精讲 4.The best approach_(solve))this conflict is through peaceful communication.(易错点四) Ⅱ.短文填空（综合运用四大易错点） 用动词不定式的适当形式填空： It's well-known that 1.(develop)good learning habits is crucial for students.However,manyteenagers struggle with this.Some think 2.(not plan)their study time is acceptable,but this often leads to poor grades.Teachers often emphasize that the most effective way 3.(improve)academic performance is through consistent practice.For example,my classmate Lily's daily routine 4.(review)notes every evening has helped her achieve top scores.Remember,5.(it)is never too late to start building positive habits V.连词成句（聚焦易错句式） 1.is,to,the,expand,company's,market,aim,overseas,()(易错点二) 2.it,for,to,is,important,.us,on,time,aive,meetings,to,()（易错点一) 3.not,without,permission,leave,.the,classroom,to,is,allowed,()（易错点三) 4.the,to,problem,is,this,way,effective,.most,find,solution,a,()（易错点四) 参考答案 I单项选择 1.C2.A3.A4.C Ⅱ.用所给词的适当形式填空 1.Not to give 2.is to complete 3.It to master 4.to solve I.短文填空 1.to develop 2.not to plan 3.to improve 4.is to review 5.it V.连词成句 1.The company's aim is to expand overseas market. 2.It is important for us to arrive on time to meetings. 3.Not to leave the classroom without permission is allowed. 4.The most effective way to this problem is to find a solution. 4