2020年广东中考英语专题复习二第1讲

1、第二部分第三章第1讲1红星机械厂加工车间有70名工人，平均每人每天生产大齿轮10个或小齿轮20个，2个大齿轮与3个小齿轮刚好配成一套，则应安排多少人生产大齿轮，多少人生产小齿轮，才能使每天生产的大小齿轮刚好配套？解：设安排x人生产大齿轮，y人生产小齿轮，根据题意，得，解得.答：应安排40人生产大齿轮，30人生产小齿轮，才能使每天生产的大小齿轮刚好配套2(2019铜仁期末)某旅行社组织一批游客外出旅游，原计划租用30座客车若干辆，但有15人没有座位，若租用同样数量的45座客车，则多出一辆车，且其余客车恰好坐满已知30座客车租金为。

2、第一章 选择题、填空题,第2讲 重难点突破,第二部分 专题突破,3,方法突破,D,4,【思路点拨】yx2图象上纵坐标相同的两点的横坐标互为相反数,【方法归纳】本题考查二次函数图象的轴对称性，二次函数图象上点的纵坐标相同时，对应点关于抛物线对称轴对称,5,B,6,7,A,8,9,【方法归纳】本题主要考查了扇形面积的计算，求阴影面积的主要思路是将不规则图形面积转化为规则图形的面积，常用的方法：直接用公式法；和差法；割补法,10,D,11,12,B,13,【方法归纳】本题考查学生分析数据和总结、归纳数据规律的能力，关键是找出规律，要求学生要有一定的解。

3、第三章 解答题(二)突破8分题,第1讲 实际应用题,第二部分 专题突破,3,一、分配类问题 【典例1】(2019盐城期末)某加工车间共有20名工人，现要加工1 800个甲种零件，1 000个乙种零件，已知每人每天加工甲种零件30个或乙种零件50个(每人只能加工一种零件)，怎样分工才能确保同时完成两种零件的加工任务？ 【思路分析】设安排x人生产甲种零件，y人生产乙种零件，列出二元一次方程组求解,方法突破,4,答：应安排15人生产甲种零件，5人生产乙种零件才能确保同时完成两种零件的加工任务,5,【方法归纳】解实际应用题的关键是读懂题意，弄清题中各数。

4、第一部分第一章第4讲1(2019无锡)函数y中的自变量x的取值范围是(D)AxBx1CxDx2(2019广东)化简的结果是(B)A4B4C4D23(2018兰州)下列二次根式中，是最简二次根式的是(B)ABCD4(2018无锡)下列等式正确的是(A)A()23B3C3D()235(2017广州)下列运算正确的是(D)AB2CaD|a|a(a0)6下列整数中，与10最接近的是(C)A4B5C6D77已知n是正整数，是整数，则n的最小值是(C)A1B2C3D48(2018恩施)函数y的自变量x的取值范围是x且x3.9(2019南京)计算的结果是0.10(2019湘西)下面是一个简单的数值运算程序，当输入x的值为16时，。

5、第二部分第一章第1讲1(2018莱芜)若x，y的值均扩大为原来的3倍，则下列分式的值保持不变的是(D)ABCD【解析】对于D，x，y的值均扩大为原来的3倍，则.故选D2(2019湘西)下列运算正确的是(D)Aa2a4a8B(x2)(x3)x26C(x2)2x24D2a3a5a【解析】A项不能合并同类项，不正确；B项原式x25x6，不正确；C项原式x24x4，不正确；D项原式5a，正确故选D3(2018广安)已知点P(1a,2a6)在第四象限，则a的取值范围是(A)Aa3B3a1Ca3Da1【解析】因为点P(1a,2a6)在第四象限，所以，解得a3.故选A4(2019郑州模拟)若mn3，mn2，则mn2m2n(C)A1B3C6D9【解析】用整体代入法mn2m2n。

6、第一章 选择题、填空题,第1讲 答题策略,第二部分 专题突破,3,一、直接推演法 【典例1】(2018湘西)下列说法中，正确的有( ) 对顶角相等； 两直线平行，同旁内角相等； 对角线互相垂直的四边形为菱形； 对角线互相垂直平分且相等的四边形为正方形 A1个 B2个 C3个 D4个,方法突破,B,4,【思路点拨】根据对顶角的性质，平行线的性质，菱形的判定，正方形的判定，可得答案 【解析】对顶角相等，故正确；两直线平行，同旁内角互补，故错误；对角线互相垂直且平分的四边形为菱形，故错误；对角线互相垂直平分且相等的四边形为正方形，故正确故选B,。

7、第一章 数与式,第一部分 基础过关,第4讲 二次根式,3,考情通览,4,5,知识梳理,要点回顾,6,3,即时演练,2,7,C,8,要点回顾,9,2,即时演练,5,20,3,7,2a,3,10,要点回顾,11,2,即时演练,2y,12,【思路点拨】分式有意义，分母不等于零；二次根式的被开方数是非负数即x10且x20.,命题揭秘,A,13,D,14,【思路点拨】最简二次根式必须满足两个条件：被开方数不含分母，被开方数不能含开得尽方的因数或因式凡是被开方数为分数、小数的，则一定不是最简二次根式,D,15,B,16,【思路点拨】利用二次根式的加减法对A进行判断；根据二次根式的性质对B进行判断；根据。

8、第7讲 形容词和副词,专题二 语法知识,2020年中考复习课件,用括号内所给单词的适当形式填空 1.Most foreign visitors become _ (interest) in traditional Chinese culture than before. 2.Nowadays, English is _ (wide) used in the world because its far easier than any other language. 3.Volunteers are everywhere.You can find them _,(easy) in China.,more interested,(the) most widely,4.The soup was too _ (salt) because I put too much,salt in it.,easily,salty,healthy,5.Parents are paying more at。

9、第9讲 动词的时态和语态,专题二 语法知识,2020年中考复习课件,单项填空,C,D,(,)1.China successfully _ the World Horticultural,Exposition (世界园艺博览会) from April to October in 2019, with the topic “Green Living, Beautiful Home”.,A.hosts C.hosted,B.had host D.has hosted,(,)2.Wheres my packed lunch, mom?,In the kitchen.I _ two sandwiches for you.,A.makes,B.make,C.made,D.have made,(,)3.Its true that not every goal _ and not every,dream will come true.The most beautiful scenery is on the way.,A.achi。

10、第12讲 主谓一致,专题二 语法知识,2020年中考复习课件,用括号内所给单词的适当形式填空 1.Look! Each of them _ (bring) a birthday gift for,you.,brings,needs,was,is,goes,2.Either the players or the coach _ (need) to be there to play soccer now. 3.There _ (be) a dog and two cats in the house yesterday. But they are missing. 4.Three kilometers _ (be) a farther distance.Youd better catch a bus there. 5.Everybody except Mike and Linda _ (go) to school by bus every day.,主谓一致主要掌握它的三个原则：语法一。

11、第11讲 句子种类和成分,专题二 语法知识,2020年中考复习课件,句型转换，每空一词 1.There must be something wrong with my computer.(改为一,般疑问句),Must,anything,Dont,shout,_ there be _ wrong with your computer? 2.You shouldnt shout back to your parents while youre arguing with them! (改为祈使句) _ _ back to your parents while youre arguing with them!,3.Helen ever hardly watches TV shows.(变成反意疑问句) Helen ever hardly watches TV shows, _ _？ 4.This action movie is quite interesting, and。

12、第8讲 动词的分类,专题二 语法知识,2020年中考复习课件,单项填空,C,A,(,)1.Could I play the computer game now, mom?,No, youd better not.You _ finish your homework first.,A.might,B.could,C.must,D.can,(,)2.If you always _ yourself with others, you,may have tons of pressure. I agree.We should believe in ourselves.,A.compare,B.communicate,C.create,D.consider,(,)3.A true friend will never _ from you when,youre in trouble.,A.take away C.put off,B.run away D.get off,(,)4.Who does the schoolwork e。

13、第13讲 复合句,专题二 语法知识,2020年中考复习课件,单项填空,A,C,(,)1.What do you think of your Junior Middle School,life? I think its colorful _ I am always busy.,A.although,B.because,C.if,D.whenever,(,)2.Everyone wants to reach the top of the mountain, but,some climbers have to give it up _ it is too high.,A.while,B.unless,C.because,D.although,(,)3.If we _ take environmental problems seriously,D,B,the earth _ worse and worse. A.dont; wont be B.wont; isnt C.won。

14、第14讲 情景交际,专题二 语法知识,2020年中考复习课件,单项填空,D,C,(,)1.Would you like to come to dinner tomorrow evening?,_.,A.Yes, its true C.Its upstairs,B.You really do D.Yes, Id love to,(,)2._.Hope is all around you.,Thank you, Mr.Lin.,A.Dont be late again C.Never give up,B.Dont hurry up D.Never get proud,(,)3.I must go now.My plane is ready to take off.,Goodbye._.,A.Dont worry C.No problem,B.Have a good trip D.With pleasure,(,)4.Its nearly lunch time.How。

15、第4讲 数词,专题二 语法知识,2020年中考复习课件,用括号内所给单词的适当形式填空 1.Today is Childrens Day.Its on the _ (one) day of,June.,first,Thousands,twelfth,forties,2._ (thousand) of people come to Guilin for vacations every year. 3.I got a beautiful iPad on my _ (twelve) birthday. 4.My mother looks very young, but she is in her _,(forty).,twentieth,5.Our company lies in the _ (twenty) floor of the high building.,基数词的构成和用法,一、基数词的构成,1.112 对应的英文单词是独立单词，必须分别记忆。。

16、第2讲 冠词,专题二 语法知识,2020年中考复习课件,专题二 语法知识,2020年中考复习课件,用适当的冠词(a, an, the 或/)填空 1.Dont tell a lie.You are _ honest boy. 2.Playing _ violin is fun for us all. 3.The Longest Day in Changan (长安十二时辰) is such _ wonderful TV play that I want to see it _ second,time.,an,the,a,a,4.I spend _ hour playing _ chess every day,and now Im very good at it.,an,/,the,/,5.In the United States, Fathers Day falls on _ third Sunday in _ June.,冠词是。

17、第6讲 连词,专题二 语法知识,2020年中考复习课件,选词填空 1.We cannot change reality, _ we can change the eyes,which see reality.,2.Tom can do some things at home _ he is still young. 3.I wonder if you have made a decision on the project, Jack. Not yet.I cant make it _ I have first-hand information on prices. 4.Swimming is exciting.But kids cant do it _ they go,swimming with adults.,5.I like listening to the music _ it makes me relaxed.,but,though,until,unless,because,连词是一种虚词。

18、第5讲 介词,专题二 语法知识,2020年中考复习课件,单项填空,C,D,A,(,)1.Dont stay inside _ such a sunny morning.Lets,go out for a walk.,A.at,B.in,C.on,D.to,(,)2.I won the first prize in the exam, so I was proud,_ myself.,A.about,B.over,C.from,D.of,(,)3.The “teacher-free exam” means that students take,their exams _ teachers.Students must be more honest.,A.without,B.against,C.through,D.by,(,)4.Junior high school days will be over _ a,week.How are you feeling? Im trying to keep my c。

19、第3讲 代词,专题二 语法知识,2020年中考复习课件,用括号内所给单词的适当形式填空 1.Tomorrow is Toms birthday, and he invited _ (we),to his birthday party.,us,hers,mine,themselves,2.This new e-bike is Helens, and the orange mobike is _ (she), too. 3.Who is that boy wearing a white hat? Ben, a friend of _ (I). 4.To achieve their dreams, they need to depend on _,(they).,our,5.Building beautiful China is _ (we) common dream. We must succeed.,代词是用来代替名词或名词短语的词，按其意义、特征及 语法功能分。

20、专题二 语法知识,第1讲 名词,2020年中考复习课件,专题二 语法知识,2020年中考复习课件,用括号内所给单词的适当形式填空 1._ (friend) are those who make you smile, always open their hearts to you and encourage you to succeed. 2.Thanks to the _ (clean), our city becomes more and,more beautiful.,Friends,cleaners,knives,3.These _ (knife) are used to cut special paper. 4.The _ (develop) of Al (人工智能) will enable us,to learn more about our brains.,development,minutes,5.The high-speed railway station is not。