Unit 2 Inspiring people 语法--it作形式主语 专项练 2026-2027学年英语人教版九年级上册

**基本信息** 初中英语九年级上学期Unit 2语法专项，聚焦“it作形式主语”核心用法，通过多题型系统训练构建从基础句型到语境应用的完整能力链，提升语言运用与逻辑思维能力。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |单项选择|15题|区分for/of介词：描述事物性质用for，描述人品质用of|从基础句型（It is+adj.+for/of sb. to do sth.）到时态变化（如过去时was）| |单词语法填空|10题|不定式作真正主语：It is+adj.+to do sth.；强调句型中动词时态一致|连接句型结构与动词形式，强化语法规则应用| |完成句子/改错|18题|句型转换技巧：不定式/that从句与it句型互转；纠正be动词缺失、介词误用等|从结构转换到错误分析，深化对句型完整性的理解| |短文填空/翻译|15题|语境化运用：结合人物事迹（如爱因斯坦）仿写It句型|实现语法知识向语用能力迁移，培养文化意识与表达能力|

Unit 2 Inspiring people 语法--it作形式主语 专项练 2026-2027学年上学期初中英语人教版（新教材）九年级上学期 一、单项辨析选择 1．It is necessary ________ us to read stories about inspiring people. A．of B．to C．for D．with 2．It is essential ________ us ________ learning throughout our lives. A．for; to keep B．of; to keep C．for; keeping D．of; keeping 3．________ true that Stephen Hawking was one of the greatest physicists in history. A．It B．It is C．That is D．This is 4．It is important ________ students to develop good study habits. A．on B．of C．for D．at 5．It is kind ________ the scientist to share his knowledge with the public. A．for B．of C．to D．with 6．It was kind ________ Yuan Longping to train more farming workers. A．of B．for C．in D．from 7．It is hard ________ ordinary people to finish such hard research work. A．of B．to C．for D．at 8．It ________ important for us to keep learning from pioneers. A．were B．was C．is D．be 9．It is amazing ________ Alan Turing to create computer science. A．of B．for C．at D．on 10．It ________ difficult for Zhong Yang to stand the cold in Xizang. A．was B．is C．be D．are 11．It was creative ________ I.M. Pei to design the Louvre glass pyramid. A．for B．of C．he D．to 12．It is brave ________ the young researcher to challenge the traditional theory. A．for B．of C．with D．from 13．It was admirable ________ Amelia Earhart to fly across the Atlantic. A．for B．of C．with D．about 14．It was wise of Confucius ________ respect elders. A．we B．us C．to D．for 15．It ________ brave of Mozi to fight for peace in the Warring States Period. A．is B．was C．are D．were 二、单词语法填空 16．It was in 2001 that he ________ (begin) his public welfare work. 17．It is necessary ________ (review) lessons every day. 18．It is wonderful ________ (have) supportive family members. 19．It is dangerous ________ (drive) cars without carefulness. 20．It was the support of his family that ________ (help) him succeed. 21．It was Cai Lun who ________ (invent) the papermaking technology. 22．It was in 2006 that the railway ________ (complete). 23．It was brave of her ________ (stand) up for the weak people. 24．It is helpful for us ________ (listen) to teachers’ advice. 25．It was great of Yuan Longping ________ (develop) new hybrid rice. 三、完成句子 26．To finish the work in one day is difficult for me. (用 It is...for... 句型改写) ________________________________________________ 27．We should learn English well. It is important.(合并为 It is + adj. + that 从句) ________________________________________________ 28．You are kind to help me. (用It is...of...句型改写) ________________________________________________ 29．We should learn from great people. (改为It固定句型) ________ ________ necessary for us ________ learn from great people. 30．To master English takes lots of time.（用it改写） _______________________________________________________________ 31．It’s nice of you to offer help.（改为一般疑问句） _______________________________________________________________ 32．It is hard for him to give up smoking. (改为感叹句) ________ hard it is for him to give up smoking! 33．You are brave to help the old man. (改写为It句型) _______________________________________________________________ 34．To learn good manners is important.（同义句，it作形式主语） _______________________________________________________________ 35．He solved the problem. It was clever of him.(用It was...of...句型改写) ________________________________________________ 36．People believe that the medicine works well. (改写为“It is believed that...”句型) ________________________________________________ 37．She can speak four languages. It is amazing. (合并为“It is + adj. + that”句型) ________________________________________________ 38．To keep working hard is important for us.  (改为It固定句型) ________ ________ important for us ________ keep working hard. 39．It takes them one day to visit the museum. (同义句) They ________ one day ________ the museum. 40．You are stupid to make that mistake.（It句型转换） _______________________________________________________________ 41．It’s interesting for us to watch science videos. (对划线部分提问) _______________________________________________________________ 42．It’s kind of her to care for homeless animals.（改为否定句） _______________________________________________________________ 43．She spent two hours finishing the report. (同义转换) It ________ her two hours ________ ________ the report. 四、改错 句子改错（6道，每句一处介词/时态/不定式/句子结构错误，找出并改正） 44．It was difficult of Zhong Yang to climb high mountains for seeds. 45．It is wise for Confucius to teach people to respect the old. 46．It were brave of Zhang Qian to travel across dangerous lands. 47．It amazing for us to know all these great people’s stories. 48．It was creative of I.M. Pei design the Suzhou Museum. 49．It important for students to have big dreams in study. 五、短文填空 (填入合适单词或动词正确形式) It 50 amazing that many great pioneers have changed the world. It is brave 51 them to fight against disease and hunger. It is important 52 us to learn their spirits. It 53 said that these scientists spent years doing research. It is necessary 54 we keep learning and exploring. It was wise 55 these people to keep a good balance in life. It is easy 56 us to learn from their stories. It is good 57 teenagers to be brave and wise. It is true 58 everyone can become inspiring people if they keep trying. It is a good idea 59 us to develop good habits and never give up our dreams. 六、翻译 请结合短文内容，从文中选取信息，运用句型 It is/was + adj. + that从句/for sb. to do sth./of sb. to do sth. 仿写5个句子，并写出对应的汉语翻译。 Albert Einstein: A Life of Curiosity and Discovery Albert Einstein is widely considered one of the greatest scientists in history. It is true that he completely changed the way we understand the universe with his theory of relativity. He was born in Germany in 1879, and even as a child, he showed a strong curiosity about how things worked. Experts find it amazing that Einstein published four groundbreaking papers in 1905, the year known as his “miracle year”. These papers covered topics from the photoelectric effect to the theory of relativity. It was creative of him to think in such unique ways that challenged traditional physics. As a scientist, Einstein was brave enough to question established ideas. It was difficult for him to gain acceptance at first, but he never gave up. His persistence finally led to worldwide recognition. He won the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect. Einstein was also known for his kindness and wisdom. He often spoke about the importance of education and peace. It is meaningful for young people to learn from his life story. He once said, “It is important for us to never stop questioning.” His words continue to inspire generations of scientists and thinkers. 60．仿写句（英）: ___________________________________ 翻译（中）: ___________________________________ 61．仿写句（英）: ___________________________________ 翻译（中）: ___________________________________ 62．仿写句（英）: ___________________________________ 翻译（中）: ___________________________________ 63．仿写句（英）: ___________________________________ 翻译（中）: ___________________________________ 64．仿写句（英）: ___________________________________ 翻译（中）: ___________________________________ 参考答案 题号 1 2 3 4 5 6 7 8 9 10 答案 C A B C B A C C B A 题号 11 12 13 14 15 答案 B B B C B 1．C 句意：对我们来说，阅读关于鼓舞人心的人的故事是必要的。 of……的；to到；for对于；with和。固定句型“It is+adj.+for/of sb.+to do sth.”，当形容词描述事物性质（如necessary）时用for，描述人的品质（如kind）时用of。本句中necessary意为“必要的”，形容事情，故用for。 2．A 句意：对我们来说，终身保持学习是至关重要的。 for为了；of……的。考查固定句型“It is+adj+for/of sb+to do sth”，形容词essential意为“至关重要的”，描述事物性质而非人物性格，介词应用for；该句型中真正的主语是动词不定式，第二空应用to keep。 3．B 句意：斯蒂芬·霍金是历史上最伟大的物理学家之一，这是真的。 It is+形容词+that从句是固定结构，其中It作形式主语，真正的主语是that引导的从句。 4．C 句意：对学生们来说养成良好的学习习惯是重要的。 on在……上面；of……的；for对于；at在。固定句型“It is+adj+for sb+to do sth”意为“对某人来说做某事是……的”，当形容词描述事物性质时用介词for；若描述人的品质则用of，此处important修饰事情，故用for。 5．B 句意：这位科学家把他的知识分享给公众，真是太善良了。 for对于；of……的；to向；with和。It is+adj.+of/for+sb.+to do sth.句型中，若形容词是说明人的性格、品质，用介词of；若说明事物的性质，用介词for。本题kind意为“善良的”，是评价人的品质。 6．A 句意：袁隆平培训更多的农业工人真是太善良了。 of属于……的；for为了；in在……里面；from来自。该句为固定句型“It is/was+ adj.+for/of+sb.+to do sth.”。当形容词表示人的性格、品质时，用介词of；当形容词表示事物的性质时，用介词for。根据句中kind可知，是形容人的品质，应用介词of。 7．C 句意：对于普通人来说，完成如此艰难的研究工作是困难的。 of……的；to向；for对于；at在。在“It is+adj.+for/of sb.+to do sth.”句型中，若形容词描述事物的性质（如 hard, difficult, easy），介词用for；若形容词描述人的品质特征（如 kind, clever, nice），介词用of，本题中hard意为“困难的”，描述的是事情的难度，因此选用for。 8．C 句意：对我们来说，继续向先锋学习是很重要的。 were是，过去式，复数；was是，过去式，单数；is是，一般现在时，单数；be是，动词原形。该句陈述一般事实应用一般现在时，主语It为第三人称单数，be动词用is，固定句型“It is+adj.+for sb.+to do sth.”表示“做某事对某人来说是……的”。 9．B 句意：艾伦·图灵开创计算机科学，这件事令人惊叹。 of……的；for对于；at在；on在……上面。It is +形容词+for sb. to do sth.用来形容事物性质。 10．A 句意：钟扬很难忍受西藏的严寒。 was是（过去式单数）；is是（现在单数）；be原形；are是（复数）。描述过去发生的事迹，用一般过去时，符合语境。 11．B 句意：贝聿铭设计卢浮宫玻璃金字塔很有创意。 for对于；of属于；he他；to去。It is+形容词+of sb. to do sth.形容人的品质性格，这里用于形容“I.M. Pei”符合语境，应填of。 12．B 句意：这位年轻研究员敢于挑战传统理论，真的很勇敢。 for对于；of……的；with和；from来自。固定句型It is+形容词+of/for sb. to do sth.，当形容词描述人的品格特质时，介词用of；for用于形容事件本身的属性，本句中brave“勇敢的”指人的品质，所以用of。 13．B 句意：阿梅莉亚·埃尔哈特飞越大西洋，真是令人敬佩。 本题考查固定句型It is/was+形容词+of/for sb to do sth，当形容词用来评价人物的品质、性格时，用介词of；当形容词描述事情本身的特征时，使用for。形容词“admirable” 意为 “令人钦佩的”，用来赞扬Amelia Earhart本人的可贵品质，因此选用of。with“同，和”与about“关于”无法用于该句型。 14．C 句意：孔子尊重长辈是明智的。 we我们；us我们（宾格）；to到/去；for为了/对于。此处为“It is/was+形容词+of sb to do sth.”固定句型，意为“某人做某事是……的”，此处需要不定式符号to接动词原形，构成不定式短语作真正主语。 15．B 句意：墨子在战国时期为和平而战是勇敢的。 根据时间状语“in the Warring States Period”可知，动作发生在过去，用一般过去时；主语It为第三人称单数，be动词用was。 16．began 句意：正是在2001年，他开始了他的公益事业。时间状语in 2001是过去时间，句子使用一般过去时，begin的过去式是began。 17． to review 句意：每天复习功课是必要的。“It is+形容词+to do sth.”为固定句型，意为“做某事是……的”，在该句型中，It作形式主语，真正的主语是后面的动词不定式短语。因此，括号内的动词review需要变为不定式形式，即to review。 18． to have 句意：拥有支持你的家人是很棒的。固定句型“It is + 形容词 + to do sth”中，不定式短语作真正的主语，it为形式主语，故填to have。 19． to drive 句意：开车粗心大意很危险。“It is +形容词+ to do sth.”为固定句型，意为“做某事是……的”，在该句型中，It作形式主语，真正的主语是后面的动词不定式短语。因此，括号内的动词drive需要变为不定式形式，即to drive。 20． helped 句意：正是他家人的支持帮助他取得了成功。这是一个强调句型“It was ... that ...”，根据主句中的was可知，句子描述的是过去发生的事情，因此that从句中的谓语动词也应用一般过去时。“help”的过去式为helped。 21． invented 句意：发明造纸术的是蔡伦。这句话是强调句型“It was ... who ...”结构，被强调的部分是过去的人物Cai Lun，蔡伦发明造纸术是过去发生的真实历史事件，主句be动词用了过去式was，从句的谓语动词也要使用一般过去时，所以invent要变为过去式invented，意为“发明”。 22．was completed 句意：这条铁路是在2006年竣工的。本句为it was…that…强调句型，主语the railway和complete是被动关系，并且根据“in 2006”可知是过去时间，使用一般过去时的被动语态，其构成为：was/were + 过去分词。主语railway是单数，故填was completed。 23．to stand 句意：她敢于为弱势群体挺身而出，十分勇敢。It was + adj. + of sb. to do sth.表示“某人做某事是……的”，此处需要使用动词不定式，stand变为to stand。 24． to listen 句意：对我们来说，听取老师的建议是有帮助的。固定句型“It is + 形容词 + for sb + to do sth”中，不定式短语“to listen to teachers’ advice”作真正主语，故填to listen。 25． to develop 句意：袁隆平培育新型杂交水稻，真是太伟大了。本句为固定句型It is+形容词+of sb. to do sth.，it作形式主语，真正主语是后面的动词不定式，因此develop变形为to develop。 26．It is difficult for me to finish the work in one day. 句意：在一天之内完成这项工作对我来说很难。动词不定式作主语时，可转换为固定句型“It is + 形容词 + for sb. to do sth.”，其中It作形式主语，真正主语后置为to do结构，故填It is difficult for me to finish the work in one day. 27．It is important that we learn English well. 句意：我们应该学好英语。它是重要的。固定句型“It is+adj.+that从句”中，It作形式主语，that引导的从句作真正的主语。形容词为important，置于系动词is之后，原句“We should learn English well”作为从句内容放在that之后。故填It is important that we learn English well. 28．It is kind of you to help me. 句意：你帮助我，真是太善良了。根据句意可知，在固定句型“It is+adj.+of/for+sb.+to do sth.”中，当形容词是用来评价人的性格或品质（如 kind, nice, clever, foolish 等）时，介词用of；当形容词是描述事情本身的性质（如 hard, easy, important 等）时，介词用for。原句中“You are kind”说明kind是修饰人的品质，因此改写时介词选用of。故填It is kind of you to help me. 29． It is to 句意：我们应该向伟人学习。原句可转换为It固定句型，用到核心结构It is + adj. + for sb. to do sth.，对应填入It、is、to，改写后完整句为It is necessary for us to learn from great people。 30．It takes lots of time to master English. 句意：掌握英语需要花费大量时间。原句是动词不定式作主语，可以转换为固定句型“It takes + 时间 + to do sth.”，It作形式主语，真正的主语是后面的动词不定式。故填It takes lots of time to master English. 31．Is it nice of you to offer help? 句意：你主动提供帮助真是太好了。 原句是含有be动词is的陈述句，变一般疑问句时，需将be动词提前至句首，其余语序不变。原句的It’s还原为it is，句首需首字母大写。故填Is it nice of you to offer help? 32．How 句意：对他来说戒烟很难。本句中心词hard为形容词，how引导感叹句修饰形容词或副词，结构为“How + 形容词/副词 + 主语 + 谓语!”，句首首字母大写。 33．It’s brave of you to help the old man. 句意：你很勇敢，帮助了这位老人。本句中形容词brave形容人的品质，使用句型“It’s + adj. + of sb. to do sth.”。故填It’s brave of you to help the old man. 34．It’s important to learn good manners. 句意：学会礼貌是很重要的。本题要求用it作形式主语改写句子，应用It’s+形容词+to do sth.的结构。原句主语是动词不定式短语To learn good manners，改写时用it代替它放在句首作形式主语，将真正的主语移到句末，形容词important保持不变。故填It’s important to learn good manners. 35．It was clever of him to solve the problem. 句意：他解决了这个问题。他是聪明的。题目要求用“It was...of...”句型合并句子，表达“某人做某事是……的”。该句型结构为“It was + 形容词 + of + sb. + to do sth.”，将“solved”改为不定式“to solve”，作真正的主语。 36．It is believed that the medicine works well. 句意：人们认为这种药效果很好。“It is believed that...”意为“人们相信……”，it作形式主语，题干中“the medicine works well”为真正的主语，由that引导构成主语从句，保持原内容不变，句首首字母大写。 37．It is amazing that she can speak four languages. 句意：她能说四种语言。这太令人惊讶了。“It is+形容词+that...”句型中，it作形式主语，形容词amazing置于is后作表语，原句“She can speak four languages.”是句子真正的主语，由that引导主语从句，保持原陈述语序，句首首字母大写。 38． It is to 句意：对我们来说，继续努力是很重要的。原句以不定式短语“To keep working hard”作主语，改写后使用形式主语“It”，将真正主语“to keep working hard”后置，构成固定句型“It is + 形容词 + for sb. + to do sth.”。故填It；is；to。 39． spend visiting 句意：参观博物馆花费他们一天的时间。原句中“It takes sb.+时间+to do sth.”表示“做某事花费某人多长时间”，同义转换句型为sb. spend+时间+(in) doing sth.，主语They为复数，一般现在时谓语动词使用原形spend，spend后接动词时要用动名词形式，visit的动名词形式为visiting。故填spend；visiting。 40．It’s stupid of you to make that mistake. 句意：你犯那个错误真是愚蠢。句子为陈述句，改为It作形式主语的句型，形容词stupid修饰人的品质，需要使用It is+adj.+of sb. to do sth.结构，it作形式主语，真正的主语是后面的不定式to make that mistake 41．What is interesting for us to do? 句意：对我们来说看科学视频很有趣。对划线部分提问，划线部分为具体的动作内容，对其提问应用疑问词What，问句中用to do替代原不定式动作，同时保留“for us to”结构。故填What is interesting for us to do? 42．It’s not kind of her to care for homeless animals. 句意：她照顾无家可归的动物真是善良。句子为一般现在时，改为否定句，需要在be动词is后加not。 43． took to finish 句意：她花了两个小时完成报告。sb.+spend+时间+doing sth.是常用表达，意为“某人花费多长时间做某事”，可以和It takes sb.+时间+to do sth.“做某事花费某人多长时间”替换，spent是动词spend“花费”的过去式，可知所给句子是一般过去时，改变后的句子也要用一般过去时，take的过去式是took，因此第一空填took；二、三空填finish“完成”的不定式形式to finish。 44．of→for 45．for→of 46．were→was 47．It amazing→It is amazing 48．design→to design 49．It important→It is important 44．句意：钟扬为了采集种子攀登高山，这件事对他而言十分艰难。此处考查句型It’s+adj+of/for sb to do sth，当形容词是评价人的性格或品质时用of，当形容词是描述事情本身的性质时用for，句中difficult修饰的是“爬山”这件事，因此需要把of改成for。 45．句意：孔子教导人们尊敬长者，这一行为是十分明智的。此处考查句型It’s+adj+of/for sb to do sth，当形容词是评价人的性格或品质时用of，当形容词是描述事情本身的性质时用for，wise描述的是孔子的品质，因此需要把for改成of。 46．句意：张骞穿越危机四伏的地域，这一行为十分勇敢。主语是It是第三人称单数，且句子描述过去的事情，be动词应用单数过去式was。 47．句意：了解所有这些伟人的事迹，让我们深感震撼。原句缺少谓语动词，形容词amazing不能直接作谓语。根据句型It is+adj+for sb+to do sth.，应在It后加is构成完整句子。 48．句意：贝聿铭设计了苏州博物馆，非常具有创造性。句型It is+adj+of sb+to do sth.中，真正的主语是后面的动词不定式短语。design是动词原形，需改为不定式to design。 49．句意：对学生而言，在求学过程中拥有远大的理想是很重要的。原句缺少谓语动词，important是形容词。根据句型It is+adj+for sb+to do sth.，应在It后加is使句子结构完整。 50．is 51．of 52．for 53．is 54．that 55．of 56．for 57．for 58．that 59．for 50．句意：许多伟大的先驱者改变了世界，这是令人惊异的。句子描述客观事实用一般现在时，主语It和表语形容词amazing之间缺少系动词is。 51．句意：他们与疾病和饥饿作斗争是勇敢的。在固定句型“It is+adj.+for/of sb. to do sth.”中，当形容词描述事物性质时，介词用for；若形容词描述人的品性，介词用of。本句中形容词brave描述人的品质，因此介词应用of。 52．句意：学习他们的精神对我们来说是很重要的。在固定句型“It is+adj.+for/of sb. to do sth.”中，当形容词描述事物性质时，介词用for；若形容词描述人的品性，介词用of。本句中形容词important描述“学习他们的精神”这件事的重要性，因此介词应用for。 53．句意：据说这些科学家花了数年时间做研究。固定句型“It is said that ...”表示“据说……”。 54．句意：我们有必要不断学习和探索。固定句型“It is +adj.+that从句”是it作形式主语的主语从句结构，that引导真正的主语从句。 55．句意：这些人在生活中保持良好的平衡是明智的。在固定句型“It is+adj.+for/of sb. to do sth.”中，当形容词描述事物性质时，介词用for；若形容词描述人的品性，介词用of。本句中形容词wise描述人的品质，因此介词应用of。 56．句意：我们很容易从他们的故事中学习。在固定句型“It is+adj.+for/of sb. to do sth.”中，当形容词描述事物性质时，介词用for；若形容词描述人的品性，介词用of。本句中形容词easy描述“从他们的故事中学习”这件事的难易程度，因此介词应用for。 57．句意：勇敢和聪明对青少年是有好处的。在固定句型“It is+adj.+for/of sb. to do sth.”中，当形容词描述事物性质时，介词用for；若形容词描述人的品性，介词用of。本句中形容词good描述“（变得）勇敢和聪明”这件事是有益的，因此介词应用for。 58．句意：如果不断努力，每个人都可以成为鼓舞人心的人，这是真的。固定句型“It is +adj.+that从句”是it作形式主语的主语从句结构，that引导真正的主语从句。 59．句意：这是一个好主意，我们养成良好的习惯，永远不要放弃我们的梦想。固定句型“It is+名词+for sb. to do sth.”结构中，用介词for引出to do不定式动作的逻辑主语。 60． It is true that Einstein completely changed the way we understand the universe. 爱因斯坦确实彻底改变了我们理解宇宙的方式。 61． It was creative of him to think in such unique ways that challenged traditional physics. 他以独特的方式思考并挑战传统物理学，这真是太有创意了。 62． It is meaningful for young people to learn from his life story. 对年轻人来说，从他人生的故事中学习是有意义的。 63． It was difficult for him to gain acceptance at first. 起初他很难获得认可。 64． It is important for us to never stop questioning. 对我们来说，永远不要停止质疑是很重要的。 60．It is true that Einstein completely changed the way we understand the universe.译为“爱因斯坦确实彻底改变了我们理解宇宙的方式。”句子中“It”作形式主语；“is”系动词；“true”作表语；“that Einstein completely changed the way we understand the universe”是主语从句，作真正主语；主语从句内，“Einstein”作主语；“changed”作谓语；“the way”作宾语；“completely”副词作状语修饰changed；“we understand the universe”定语从句，省略关系词that/in which，修饰先行词the way。 61．It was creative of him to think in such unique ways that challenged traditional physics.译为“他以独特的方式思考并挑战传统物理学，这真是太有创意了。”句子中“It”作形式主语；“was”系动词；“creative”作表语；“of him”引出不定式逻辑主语；“to think in such unique ways that challenged traditional physics”是不定式短语，作真正主语；不定式短语内，“think”为核心动词；“in such unique ways”作方式状语；“that challenged traditional physics”定语从句，修饰先行词ways；从句中“that”作主语；“challenged”作谓语；“traditional physics”作宾语。 62．It is meaningful for young people to learn from his life story.译为“对年轻人来说，从他人生的故事中学习是有意义的。”句子中“It”作形式主语；“is”系动词；“meaningful”作表语；“for young people”引出不定式逻辑主语；“to learn from his life story”是不定式短语，作真正主语；不定式短语内，“learn”为核心动词；“from his life story”作状语修饰learn。 63．It was difficult for him to gain acceptance at first.译为“起初他很难获得认可。”句子中“It”作形式主语；“was”系动词；“difficult”作表语；“for him”引出不定式逻辑主语；“to gain acceptance”是不定式短语，作真正主语；不定式短语内，“gain”为核心动词；“acceptance”作宾语；“at first”作时间状语。 64．It is important for us to never stop questioning.译为“对我们来说，永远不要停止质疑是很重要的。”句子中“It”作形式主语；“is”系动词；“important”作表语；“for us”引出不定式逻辑主语；“to never stop questioning”是不定式短语，作真正主语；不定式短语内，“stop”为核心动词；“never”作状语修饰stop；“questioning”动名词作stop的宾语。 学科网（北京）股份有限公司 $