专项复习：初中英语教科版核心句型It is 形容词 for sb to do sth等-2025-2026学年九年级英语下册语法知识点全解（教科版五四制）

初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 寒假专版 【专题】初中英语教科版核心句型 句型专项突破 考频分析 九年级教科版中，核心句型(Itis+形容词for sb.to do sth.等)是重点语法模块，考频占句法总量 的15%左右，贯穿试卷核心题型：单项选择(2-3题)、完形填空（2-4题)、语法填空(1-2题)、书 面表达（核心考察，直接影响句子结构规范性与表达准确性）。在语境应用类题目中，句型的结构 搭配、形容词选择及逻辑连接往往是解题关键。 知识点二：核心句型及固定搭配 1.Itis+形容词+for sb.to do sth.（对某人来说做某事是…的) 。结构解析 It为形式主语，真正主语是不定式短语”to do sth.”:for sb.表示动作的逻辑主语。 ·形容词分类 1.描述事物性质：important(重要的)、necessary(必要的)、difficult(困难的)、easy(容易的) 2.描述客观可能性：possible(可能的)、impossible(不可能的) 。例句 1.It is important for students to study hard..(对学生来说努力学习是重要的。) 2.It is difficult for him to solve this problem.(对他来说解决这个问题很难。) 2.Itis+形容词+ofsb.to do sth.（某人做某事真是…的) ·结构解析 It为形式主语，真正主语是不定式短语”to do sth.”:ofsb.表示对人的品质评价，形容词需能修 饰人。 ·常见形容词 kind(友善的)、nice(友好的)、clever(聪明的)、foolish(愚蠢的)、polite(礼貌的)、impolite (不礼貌的) 。例句 1.It is kind of you to help me.(你帮助我真是太友善了。) 2.It is foolish of him to believe such lies.(他相信这种谎言真是太愚蠢了。) 1 初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 3.疑问词+to do sth.（作主语/宾语/表语) ·常见疑问词 what(什么)、how(如何)、when(何时)、where(何地)、which(哪一个) ·句法功能 1.作主语：How to improve English is a big problem.(如何提高英语是个大问题。) 2.作宾语：He doesn't know what to say..(他不知道该说什么。) 3.作表语：The question is where to find the key.(问题是去哪里找钥匙。) ·例句 1.I wonder how to get to the station.(我想知道如何到达车站。) 2.When to start the meeting hasn't been decided yet.（何时开始会议还没决定。) 4.00o.（太…而不能…） 。结构 too+形容词/副词+to do sth.(表否定意义) ·同义转换 =not+形容词/副词反义词+enough to do sth ·例句 1.The box is too heavy for her to carry..(这个箱子太重，她搬不动。) =The box is not light enough for her to carry. 2.He runs too fast for me to catch up with.(他跑得太快，我追不上。) 5.so...that.（如此…以至于…） ·结构 so+形容词/副词+that从句(that后接结果状语从句) ·例句 1.She is so young that she can't go to school.(她太小了，还不能上学。) 2.He studied so hard that he passed the exam.(他学习如此努力，以至于通过了考试。) 6.情态动词+have done(表示对过去的推测/虚拟) 。常见结构 1.must have done(一定做过某事，肯定推测) 2.can't have done(不可能做过某事，否定推测) 3.should have done(本应该做某事，实际未做) 4.ned't have done(本不必做某事，实际做了) ·例句 1.You must have seen the film before.(你以前一定看过这部电影。) 2.He shouldn't have told lies to his parents.(他本不应该对父母撒谎。) 初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 7.固定搭配：动词+介词/副词 ·动词+介词 look for(寻找)、listen to(听)、wait for(等待)、depend on(依靠)、laugh at(嘲笑) ·动词+副词 put up(张贴；搭建)、take off(脱下；起飞)、give up（放弃)、turn on(打开)、put away(收拾) ·例句 1.She is looking for her lost keys.(她正在寻找丢失的钥匙。) 2.He decided to give up smoking.(他决定戒烟。) 知识点三：非谓语动词 1.todo(不定式) ●基础搭配拓展（中考必背)： l.plan to do(计划做)一→例句：She plans to visit her grandparents this weekend,. 2.hope to do(希望做)→例句：We hope to win the English competition 3.try to do(努力做)→例句：He tries to finish his homework on time. 4.leamn to do(学习做)→例句：The child learns to play the piano. 5.want to do(想要做)→例句：They want to go to the park tomorrow. 6.decide to do(决定做)→例句：I decide to study harder next term, 7.ask sb.todo(要求某人做)→例句：The teacher asks us to read English every morning 8.tell sb.todo(告诉某人做)一→例句：My mother tells me to go to bed early. 9.advise sb.todo(建议某人做)→例句：The doctor advises him to exercise more l0.need to do(需要做)→例句：We need to buy some vegetables. ·特殊结构搭配（中考易错）： l.It’s+adj.+todo(做某事是…的)→例句：It's important to leamn English well. 2.too+adj.+todo(太…而不能做)→例句：He is too young to drive a car. 3.enough+adj.+todo(足够…去做)→例句：She is old enough to go to school. 2.doing（动名词/现在分词) 。基础搭配拓展（中考必背)： 1.enjoy doing(喜欢做)→例句：They enjoy playing basketball after school.. 2.finish doing(完成做)→例句：I finish doing my homework at8p.m. 3.be good at doing(擅长做)→例句：She is good at singing English songs, 4.be interested in doing(对，感兴趣)→例句：He is interested in reading science books. 5.keep doing(持续做)→例句：The rain keeps falling all day. 6.practice doing(练习做)→例句：We practice speaking English every class. 3 初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 7.mind doing(介意做)→例句：Do you mind opening the window? 8.avoid doing(避免做)→例句：He tries to avoid making mistakes.. 9.suggest doing（建议做)→例句：The teacher suggests having a class meeting l0.spend time doing(花费时间做)一例句：I spend two hours doing my homework every day. 。固定短语搭配（中考常考）： 1.look forward to doing(期待做)一→例句：We look forward to meeting you soon. 2.give up doing(放弃做)→例句：He gives up smoking for his health 3.be used to doing(习惯做)→例句：She is used to getting up early. 3.do(动词原形) 。使役动词+do（中考核心)： l.let sb.do(让某人做)→例句：Let him help you with the work. 2.make sb.do(使某人做)→例句：The story makes us laugh. 3.have sb.do(让某人做)→例句：My father has me clean the room 。感官动词+d0（中考易错)： l.see sb.do(看见某人做某事全过程)→例句：I see her walk to school every day. 2.hear sb.do(听见某人做某事全过程)→例句：We hear him sing in the next room. 3.watch sb..do（观看某人做某事全过程)→例句：They watch the children play games. 4.notice sb.do(注意到某人做某事全过程)→例句：She notices the boy run past the door. 考法精析 考法一：Itis+形容词+for sb.to do sth.与Itis+形容词+ofsb.to do sth.辨 析 核心：根据形容词描述事物性质还是人的品质，选择正确搭配结构 真题1（单项选择)： It is_of you to help the old man cross the street. A.easy B.kind C.important D.necessary 答案：B解析：形容词kind描述人的品质（善良），应用固定搭配Itis+形容词+ofsb.to do sth. 真题2（语法填空）： It is necessary-us to learn basic life skills. 答案：for解析：形容词necessary描述事物性质（必要的），应用固定搭配Itis+形容词+for sb. to do sth. 考法二：核心句型与非谓语动词融合应用 初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 核心：结合核心句型结构特点，判断非谓语动词(todo/doing/do)的正确形式及搭配 真题1（语法填空)： It is necessary for us_(follow)the traffic rules. 答案：to follow解析：本句为Itis+形容词+for sb.to do sth.”核心句型（知识点二），其中不定 式短语to do sth.作真正主语，故此处用to follow。 真题2（单项选择)： She found it interesting(read)science books. A.read B.reading C.to read D.reads 答案：C解析：本句为”感官动词+宾语+形容词”核心句型（知识点二），其中t为形式宾语， 真正宾语需用不定式短语to read(知识点三)，构成”find it+adj.+to do sth.”结构。 真题3（单项选择）： Do you mind_(open)the window?It's too hot in the room A.open B.opening C.to open D.opens 答案：B解析：本句考查”mind doing'”固定搭配（知识点三），mind后需接动名词作宾语；同时Do you mind..?”为祈使句的疑问形式（知识点二)，故此处用opening。 考法三：非谓语动词与固定句型综合运用 核心：结合疑问词+todo结构、Itis+形容词+of/for sb.todo句型及动词固定搭配，判断非谓语动 词形式及句型搭配准确性 真题1（单项选择）： It's kindyou me carry the heavy box. A.of;help B.for;to help C.of;to help D.for;help 答案：C解析：第一个空考查tis+形容词+ofsb.to do sth.结构，kind是描述人品质的形容词， 故用of:第二个空需用不定式作真正主语，因此填to help。 真题2（语法填空)： Could you please tell me how-(improve)my spoken English?I want to join the English club. 答案：to improve解析：此处考查疑问词+todo结构作宾语，how后接不定式构成”how to improve'', 在句中作tell的宾语。 解题小妙招 核心句型与非谓语妙招 of与for辨品质，形容人品质用of: 5 初中9年级专项复习教科版（五四制） 【寒假专版】专项复习版 形容事物性质for,todo结构是真谛： 固定搭配要牢记，mind后接doing: practice doing不能忘，疑问词加todo记心里： 形式宾语it出现，后面todo莫迟疑。 真题演练 演练一：单项选择试题（共10题) 1.It is for us to protect the environment. A.important B.kind C.brave D.clever 2.is necessary for students to finish homework on time. A.This B.That C.It D.He 3.My mother often tells me_too much time playing games. A.not spend B.to not spend C.don't spend D.not to spend 4.We should practice English every morning to improve our skills. A.speak B.speaking C.to speak D.speaks 5.You follow the traffic rules when crossing the street. A.can B.may C.must D.need 6.She found interesting to learn about different cultures. A.this B.that C.it D.its 7.Do you know to solve this math problem?I'm stuck A.how B.what C.where D.when 8.The teacher asked us-quiet in the library. A.keep B.keeping C.to keep D.kept 9.He isyoung_go to school alone. A.too;to B.enough;to C.so;that D.such;that 10.We look forward to_you at the party next weekend. A.meet B.meeting C.to meet D.meets 演练二：填空试题（共10题） 1.It is kindyou to help me carry the heavy box. 2.My brother plans_(visit)the Great Wall this summer vacation. 3.Please remember(close)the door when you leave the classroom. 4.They spent two hours-(clean)their room yesterday. 6 初中9年级专项复习教科版（五四制） 【寒假专版】 专项复习版 5.You (should)eat too much junk food;it's bad for health. 6.I don't know how _(improve)my listening skills. 7.The music sounds-(beautiful);I like it very much. 8.My father often tells me stories before I go to bed.It makes me(feel)happy. 9.-(not be)late for school again,or the teacher will be angry. 10.There(be)a football match in our school next Friday. 演练三：语法填空试题（共10空） Sports and Health Everyone knows it is important(keep)healthy,and doing sports is a great way to achieve this.Many students enjoy(play)basketball or soccer after class.It not only makes them strong but also teaches them teamwork. You_(must)choose the right sport for yourself.For example,if you are not good at running,you can try swimming.Remember,it's never too late_(start)exercising.Even a short walk every day_(be) helpful. My friend Tom used to hate sports.He spent most of his time(watch)TV or playing computer games. One day,his doctor advised him(exercise)more.Now he runs for 30 minutes every morning and feels much better.He says,"It is easy(fall)into bad habits,but it's also easy to change them if you try." So,let's(start)doing sports today!You will findinteresting and relaxing. 答案区 演练-：1.A2.C3D4.B5.C6.C7.A8.C9.A10.B 演练二：1.of2.to visit3.to close4.cleaning5.shouldn't6.to improve7.beautiful 8.feel 9.Don't be 10.will be/is going to be 演练三：1.to keep2.playing3.must4.to start5.is6.watching7.to exercise 8.to fall 9.start 10.it 7