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—Is Mars bigger than the earth? —No, It's about ______ the earth. [ ]A. as big as B. as bigger as C. a quarter as big as -九年级英语

[db:作者]  2019-11-29 00:00:00  互联网

题文

—Is Mars bigger than the earth?
—No, It's about ______ the earth.

A. as big as
B. as bigger as
C. a quarter as big as
题型:单选题  难度:中档

答案

C

据专家权威分析,试题“—Is Mars bigger than the earth? —No, It's about ______ the..”主要考查你对  分数,固定搭配  等考点的理解。关于这些考点的“档案”如下:

分数固定搭配

考点名称:分数

  • 分数:
    由基数词和序数词构成—分子用基数词,分母用序数词,分子超过“1”时,分母用复数。
    例如:a/onesixth(1/6),twothirds(2/3)

  • 英语分数的表示法:
    一、用“基数词+序数词”表示
    1.分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子,序数词表示分母。
    如:
    The centimeter is one-tenth of the decimeter or one-hundredth of the meter.厘米是分米的十分之一,或者说是米的百分之一。
    However,the number of boys will bea third or less than the girls in the class.但是,班里男生的人数将比女生少三分之一或更少。
    从以上例子可以看出:
    ①分子除用one外,也可用a;
    ②如果分子大于1,分母要用复数形式。但是,1/2不能说a(one)second,而要说a(one)half。例如:
    The sum of one half,one third and one fourth of a certain number is 13.某数的1/2,1/3和1/4的和是13。
    1/4 和3/4可以说a(one)fourth和three fourths,但常用a quarter和three quarters表示。
    ③应该注意的是,分数修饰名词时,若该名词是不可数名词只能用单数;
    ④若是可数名词,用单数或复数均可。但是,若它们在句子中作主语,则谓语动词是用单数还是复数取决于名词,即与分数所修饰的名词保持一致。例如:
    Only one-fifth of air consists of oxygen.氧气只占空气的1/5。
    About two thirds of the students attendthe meeting.大约2/3的学生都参加了会议。
    2.带分数也是常见的英语数词表达。所谓带分数,实际上是“整数+分数”,表达时分而述之,只是整数部分与分数部分要用连词and连接。
    当带分数修饰名词时,该名词通常是复数,但若名词置于整数one或a之后,则用单数。
    “带分数+名词”作主语时,谓语动词根据临近原则要用复数。例如:
    You should finish the work within one and a fourth hours.你应在1.25小时内完成工作。
    The atom breaks up in a minute and a quarter.原子在1.25分钟内裂变。

    二、用percent等表示
    表示百分之一可以说one(a)hundredth,但更常用one percent或percent,即用百分数表示法来表达。例如:
    Our bodies are 65percent water.我们人体含65%水分。
    Seventy-five percent of the earth'ssur- face is covered by water.地球表面的75%被水覆盖着。
    Eighty-five percent of the students in English department are girls.英语系85%的学生是女生。

    三、用part表示
    名词part有“……分之一”的意思,分子大于1时,part用复数。表示分数的结构一般有以下三种:
    1.“基数词(或a)+序数词+part(s)” a hundred part百分之一
    2.“基数词+part(s)+in+基数词” five parts in one thousand千分之五
    3.“基数词+part(s)+per+基数词” one part per million百万分之一

    四、用“基数词+介词+基数词”表示
    借助介词表示分数,介词前的数词是分子,介词后的数词是分母。例如:
    1.Ninety- nine people out of a hundred,if they were asked who first found America,would answer Clumbus.
    如果要问是谁首先发现美洲,一百个人中有九十九个(百分之九十九)将回答是哥伦布。
    这种结构中的介词主要有in,out of,of 以及to
    2.The map is drawn to a scale of one of ten thousand.
    这张地图是按万分之一的比例绘制的。

  • 英语分数表示法:
    一般情况下,表示分数时,分子要用基数词,分母用序数词(first, second, third ...)。
    如果分子大于1,分母必须用复数形式。
    1. "1/2"或"一半"的表示方法:
    用one half或a half表示。例如:
    半英里:one (a) half mile或half one (a) mile
    一个半小时:an hour and a half或one and a half hours (hour要用复数形式)

    2. "1/4"的表示方法:
    用one (a) quarter表示。如果分子大于1, quarter用复数形式。例如:
    1/4  one (a) quarter
    3/4three quarters

    3. 如果分子大于1,分母要用序数词的复数形式。
    如果分数大于1,要用整数部分+ and + 分数表示。例如:
    1/3  one third或a third
    5/6 five sixths
    8 3/5 eight and three fifths

    4. 比较复杂的分数用over表示。
    分子(基数词)+ over + 分母(基数词)。注意这里分子、分母全用基数词表示。例如:
    51/80 fifty-one over eighty
    77/232 seventy-seven over two hundred and thirty-two

    5. 用"分子(基数词)+ (out) of + every + 分母(基数词)"表示。这里分子、分母也全用基数词表示。例如:
    1/7one of every seven
    5/9five out of every nine
    eg: An investigation showes that about two of every three students in this university are from China.
    一项调查表明这所大学大约有三分之二的学生来自中国。

    6. 用"分子(基数词)+ in + 分母(基数词)"表示。这里分子、分母也全用基数词表示。例如:
    1/3 one in three
    5/6 five in six
    eg: Only about one in five books was written for children ranged from seven to ten years old.
    只有大约五分之一的书是为七到十岁的儿童写的。

    7. 用"表示减少意义的动词或词组+ 倍数"表示减少了n-1/n。例如:
    eg: The time for the whole journey is shortened 3 times.
    整个行程的时间缩短了三分之二(或缩短到原来的三分之一)。

    8. 当分数后面接名词时,如果分数表示的值大于1,名词用复数;如果小于1,名词用单数。
    3 3/5 kilograms 三又五分之三千克(读作three and three fifths kilograms)
    4/5 meter 五分之四米(读作four fifths meter)
    5/6 inch 六分之五英寸(读作five sixths inch)

  • 百分数表示法:
    百分号%读作percent (per cent),无复数形式,数词要用基数词,应用时常与by连用。例如:

    数字

    表示法

    6%

    six percent

    0.58%

    (naught) point five eight percent

    200%

    two hundred percent

    The output of petroleum went up by twenty percent.石油产量增长了20%。
    The price of food was reduced by ten percent. 食品的价格下降了10%。
    The loss of electricity has been reduced to less than thirty percent.电的损耗减少到30%以下。 
    注意:
    由"分数(或百分数)+ of + 名词"构成的名词词组作主语时,其后的动词形式依of词组中的名词类别而定。例如:
    Two thirds of the swampland has been reclaimed for farming. 三分之二的沼泽地已经开垦为农田了。
    Over sixty percent of the doctors were women. 超过百分之六十的医生是女性。

考点名称:固定搭配

  • 固定搭配:
    英语中的固定搭配主要是指英语中的习惯用法,如有固定用法的一些动词短语、介词短语、名词词组及形容词词组。
    例如:
    take part in (参加) 
    by accident (偶然地) 
    lucky dog (幸运儿)
    be interested in (对…感兴趣)

  • 初中英语常见固定搭配:
    (一)加-ing
    enjoy / like doing sth 喜欢做----    
    spend....(in) doing sth 在做---花费---  
    try doing 试着做------                
    be busy doing sth 忙于做------
    finish doing sth 完成做----           
    look forward to + doing sth 期待做----(现在进行时)
    be doing 正在做---     
    Thank you for (doing) sth 为了--感谢你

    (二)加-to
    decide to do sth 决定去做-----             
    ask (sb)to do 要求(某人)去做----      
    It’s+adj +to do sth . 做---(怎么样)        
    would like / want to do 想要做-----    
    It takes sb sometime to do sth在做----花费----

    (三)加原形
    let / make sb do sth 让某人做某事   
    be going to / will do sth (一般将来时态)

    (四)加-to 或-ing意思不同
    forget doing 忘记做过了-----(已做)    
    forget to do 忘记去做------(还没做)   
    remember doing记得做过了-----(已做)
    remember to do记得去做------(还没做)

    (五)加-to 或-ing意思相同
    begin / start to do sth = begin / start doing sth开始做------

    (六)
    A)动词+ 介词
    agree with同意....的意见(想法);符合    
    help ... with ...帮助(某人)做(某事)  listen to听...              
    ..get to到达....       
    fall off (从......)掉下base on以....(为)根据     
    knock at /on敲(门、窗)        
    laugh at嘲笑
    learn.. from 向...学习     
    live on继续存在;靠...生活 
    look after照顾,照看look at看;观看           
    look for寻找             
    look like看起来像
    pay for (sth.)付钱;支付 
    point at指示;指向          
    point to指向....prefer to ...宁愿(选择);更喜欢           
    quarrel with (和某人)吵架
    regard...as ...把....当作....;当作                 
    stop...from阻止.....做.....
    talk about说话;谈话;谈论                        
    talk with与......交谈think about考虑                                  
    think of认为;想起
    B)动词+ 副词                                                     
    ask for请求;询问       
    carry on坚持下去;继续下去     
    cut down砍倒 
    clean up清除;收拾干净  
    come down下来;落    
    come along来;随同
    come in进来            
    come on来吧;跟着来;赶快 
    come over过来;顺便来访           
    come out出来;出现;(花)开;发(芽)      
    drop off放下(某物);下车                              
    eat up吃光;吃完
    fall behind落在......后面;输给别人            
    fall down跌倒;从......落下
    find out查出(真相)                                
    get back回来;取回
    get down下来;落下;把......取下来             
    get off下来;从......下来get on上(车)               
    get up起床                
    give up放弃go on继续               
    go out出去     
    go over过一遍;仔细检查
    grow up长大;成长      
    hand in交上来                
    hurry up赶快
    hold on (口语)等一等;(打电话时)不挂断             
    look out留神;注意
    look over (仔细)检查                            
    look up向上看;抬头看  
    pass on传递;转移到....                          
    pick up拾起;捡起
    put away放好;把....收起来  
    put on穿上;戴上;(戏剧等)上演;放(唱片等
    put down把(某物)放下来                             
    put up挂起;举起
    run away流失;逃跑;逃走 
    rush out冲出去 
    set off出发;动身;
    启程send up发射;把......往上送  
    shut down把......关上      
    sit down坐下
    slow down减缓;减速      
    take off脱掉(衣服)          
    take out取出
    throw about乱丢;抛撒                          
    trip over (被......)绊倒
    try on试穿(衣服、鞋等);试戴(帽子等)                
    try out试验;尝试
    turn down关小;调低        
    turn on打开(电灯、收音机、煤气、自来水等
    turn off关(电灯、收音机、煤气、自来水等)           
    turn over (使)翻过来
    wake up醒来                               
    wear out把......穿旧;磨坏
    work out算出;制订出                               
    write down写下....
    C) be + 形容词+ 介词                                              
    be angry with对(某人)发脾气              
     be interested in对......感兴趣 
    be able to能;会                                   
     be afraid of害怕
    be amazed at对......感到惊讶            
    be excited about对......感到兴奋
    be filled with用......充满                            
    be full of充满......的
    be good at =do well in在....方面做得好;善于             
    be late for迟到
    be made in在......生产或制造            
    be made of由....组成;由....
    be pleased with对......感到满意              
    be proud of以......自豪/高兴
    be used for用于
    D)动词+ 名词/ 代词                                               
    beg one′s pardon请原谅;对不起         
    do morning exercises做早操
    do one′s homework做作业                                           
    enjoy oneself =have a good time过得快乐;玩得愉快                   
    give a concert开音乐会     
    go boating去划船      
    go fishing去钓鱼go hiking去徒步旅行     
    go skating去滑冰     
    go shopping (去)买东西
    have a cold (患)感冒    
    have a cough (患)咳嗽  
    have a headache (患)头痛  
    have a try尝试;努力    
    have a look看一看         
    have a rest休息 
    have a seat (= take a seat ) 就坐;坐下        
    have sports进行体育活动  
    have supper吃晚餐   
    hear of听说   
    hold a sports meeting举行运动会
    make a decision作出决定  
    make a mistake犯错误  
    make a noise吵闹
    make faces做鬼脸      
    make friends交朋友       
    make money赚钱
    take one′s place坐某人的座位;代替某人的职务                       
    teach oneself (=learn by oneself ) 自学                  
    watch TV看电视 
    take photos照相       
    take time花费(时间)         
    take turns轮流
    E)动词+ 名词/ 代词/ 副词+ 介词                                  
    catch up with赶上           
    come up with找到;提出(答案、解决办法等)
    get on well with与......相处融洽                   
    give birth to生(孩子) 
    help yourself / yourselves to自取;随便吃   
    make room for给.....腾出地方
    play a joke on戏弄人;对人恶作剧              
    speak highly of称赞   
    say good bye to告别;告辞               
    take an active part in积极参加
    take care of照顾;照料;注意
    F)其他类型                                                        
    be awake醒着的          
    be born出生         
    be busy doing忙着做
    come true实现     
    do one′s best尽最大努力     
    fall asleep睡觉;入睡  
    go home回家    
    go on doing (sth.)继续做某事;尽力   
    get married结婚
    get together相聚                  
    go straight along  沿着...一直往前走
    had better (do)最好(做...)                    
    keep doing sth.一直做某事        
    make sure确保;确认;查明               
    make up one′s mind下决心



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