It is said that about ______ of the books and magazines in the world ______ in English.[ ]A. four-fifths;are writtenB. fourth fives;are writtenC. four fift-九年级英语
[db:作者] 2019-11-29 00:00:00 零零社区
题文
It is said that about ______ of the books and magazines in the world ______ in English.
[ ]
A. four-fifths;are written B. fourth fives;are written C. four fifth;were written D. fourth fifths; were written
题型:单选题 难度:中档
答案
A
据专家权威分析,试题“It is said that about ______ of the books and magazines in t..”主要考查你对 分数,被动语态,一般现在时 等考点的理解。关于这些考点的“档案”如下:
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)
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)
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。
被动语态的构成: 被动语态的基本结构: 主语+be +过去分词(+by+动作的发出者) ① 一般现在时:am/is/are+过去分词 如:Trees are planted every year. ② 现在进行时 am/is/are+ being +过去分词 如:The road is being repaired. ③ 现在完成时 have/has + been +过去分词 如:The work has been finished. ④ 一般过去时 was/were + 过去分词 如:The story was told by him. Many birds were killed last year. ⑤过去进行时 was/were+ being + 过去分词 如: The new house was being painted when I got home. ⑥过去完成时 had +been+ 过去分词 如: He told me that the work had been finished. ⑦一般将来时 will +be + 过去分词 如:The problem will be discussed tomorrow. ⑧ 过去将来时 would/should +be +过去分词 如: He said that the Christmas tree would be put up soon. ⑨情态动词的被动语态 情态动词+ be +过去分词 如:The problem must be solved soon. Children should be taught to love animals.
被动语态使用注意: 1. 不及物动词无被动语态。 如:happen, break down, come out...... What will happen in 100 years. The dinosaurs disappeared about 65 million years ago. 2. 有些动词用主动形式表示被动意义。 如: write, sell, ride..... This pen writes well. This new book sells well. 3. 感官动词或使役动词使用省略to的动词不定式,主动语态中不带“to”,但变为被动语态时,须加上“to”。 例:make somebody do something→somebody+ be +made to do something see somebody do something→somebody +be +seen to do something A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by. The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss. 4. 如果是接双宾语的动词改为被动语态时,直接宾语(物)作主语,那么动词后要用介词,这个介词是由与其搭配的动词决定。 He gave me a book.→A book was given to me by him. He showed me a ticket.→A ticket was shown to me by him. My father bought me a new bike. →A new bike was bought for me by my father. 5. 一些动词短语用于被动语态时,动词短语应当看作一个整体,而不能丢掉其中的介词或副词。 We can’t laugh at him. →He can’t be laughed at by us. He listens to the radio every day. →The radio is listened to by him every day. The nurse is taking care of the sick man. →The sick man is being taken care of by the nurse. 构成be+done.
不用于被动语态的情形: ①不及物动词没有被动语态 这类动词有take place, happen, come about, break out, appear, disappear, last, arise等。 例如:A fire broke out during the night. ②某些静态动词不用于被动语态 这类动词有have, lack, fit, hold, suit, resemble等。 例如:My shoes do not fit me. ③宾语为相互代词和反身代词时不用于被动语态 例如:We should help each other.
关于主动形式表示被动意义: ①系动词(如look, sound, smell, feel, taste, prove等)要用主动表被动,因为系动词为不及物动词,它们没有被动语态形式。 例如:The building looks very beautiful. ②当open, close, shut, lock, move, read, wash, clean, cook, cut, wear, carry 等用作不及物动词且表示主语的某种属性时,通常用主动形式表示被动意义。 例如:The book sells well. ③有的动词本身含有被动意味,通常用主动形式来表示被动含义。 例如:Her eyes filled with tears. ④不定式to blame, to let用作表语时,通常要用主动表被动。 例如:Who is to blame? ⑤某些“be+形容词+to do”结构中的不定式通常要用主动形式表示被动意义。 例如:The book is difficult to understand. ⑥不定式用于某些动词(如have, have got, get, want, need等)的宾语后作定语时,如果不定式的逻辑主语就是句子的主语,通常用主动形式表示被动意义。 例如:Do you have time to help us? ⑦在too...to do sth.和...enough to do sth. 这两个结构中,若主语与其后不定式为to do sth.被动关系,则该不定式通常用主动形式表示被动意义(有时也可直接用 被动式)。 例如:The writing is too faint to read. ⑧be worth后的动名词要用主动表被动。 例如:This movie is worth seeing. ⑨在need, want, require等少数表示“需要”的动词后的动名词用主动形式表示被动意义。 例如:The house needs cleaning.
表示“据说”的三类被动句型: ①It is said that...句式 例如:It is said that thirteen is an unlucky number. ②There is said that...句式 例如:There is said to be plenty of oil off our coast. ③sb./sth.is said that...句式 例如:Mr. Brown is said to have died of liver cancer.
一般现在时的具体用法: 1. 表示经常的或习惯性的动作,常与表示频率的时间状语连用。 e.g. I leave home for school at 7:00 every morning. 2. 表示客观事实和普遍真理。 e.g. The earth moves around the sun. 3. 表示现在发生的具体动作或存在的状态 e.g. He lives in Beijing now. 4. 习惯性的爱好或行为 e.g. I like dancing while she likes singing. 5. 表示预先计划或安排好的行为。 e.g. Our class begins at 7:45. 6. 在时间状语从句和条件状语从句中,常用一般现在时代替将来时。 e.g. If you come, we will wait for you. 7. 表示格言或警句中。 e.g. Pride goes before a fall. 骄者必败。 8.表示主语具备的性格、能力、特征和状态。 e.g. I don't want so much. Ann Wang writes good English but does not speak well. 比较:Now I put the sugar in the cup. I am doing my homework now. 9.在时间状语从句和条件状语从句中,常用一般现在时代替将来时。 10.小说故事用一般现在时代替一般过去时。新闻报道类的内容,为了体现其“新鲜”性,也用一般现在时来表示过去发生的事情。 11.有些表示状态和感觉的动词表示现在发生的具体行为时,只用一般现在时,而不用进行时态。 注意★:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。 例:Columbus proved that the earth is round.. 第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me,I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。
一般现在时与现在进行时的区别: 一、两种时态的主要含义: 一般现在时 1.表示事物的本质特性或客观存在,没有时限性。 The table ____ soft。(feels) 表特性特征。 Japan ___ in the east of China。 (lives) 表客观事实 2.现阶段经常性、习惯性的行为,可带频率时间。 The shop closes at 7:30 p.m. Father doesn’t smoke. (习惯) 3.表说话时的状态,感觉或结果,一般用状态动词,如: It doesn’t matter. Does it hurt? (感觉结果) 4.特殊用法: -在条件、时间、让步从句中用现在时代替将来。 -If you go there,I’ll help you. —用在begin,come,go,leave,return,open,close 等短暂谓语动词表规定计划。 The plane takes off at 11:30. (不受主观支配的计划) -在剧本、解说、标题或there(here)开头的句中表进行 There goes the bell/Here comes Mr.Wang. I declare the meeting opens.(正在宣布) He meets the ball and hits back to No.2 (正在发生)
现在进行时 1.说话时正在发生,进行的动作 Look! Dark clouds are gathering . (正在发生) 2.表现阶段正在进行,但此刻不一定正在进行的事。 He usually gets up at 6:00,but this week he is getting up at 7:00. (现阶段正在进行,但说话时不一定在起床) 3.现在进行时的特殊意义 -表示主观打算常用于 go,come,leave,start,begin 等,位移、趋向动词。 How long are you staying here (准备停留) -表示眼前刚过去的语意即“话音刚落”,适用于tell,say,talk,discuss You don’t believe it You know I’m telling the truth. -表示安慰、关心、喜欢、讨厌等感情色彩。 He is always making noises in class. (讨厌) -在条件、时间、让步状语从句中表示将来正在进行。 Don’t bother him if he is reading this time tomorrow.
二、严格区分进行时与一般时的语义 1. 持续动词的一般时表持续情况,经常性,习惯性行为或客观存在的事实,进行时表暂时性或有限时刻的持续。 2.短暂动词的一般时叙述事实,特征,能力而短暂动作进行时描述反复发生,即将发生或刚开始行为。 3.短暂动词和静态动词一般时表示实际情况客观状态、结果、特征、特性,进行时表未完成含开始或渐进之意。 The bus stops. (车停了-事实) The bus is stopping. (渐渐停下来) I love the job. (静态事实) I am loving the job. ( 渐渐爱上了) 4.come,go,leave,start,return,move,reach,sail,fall 等一般时态表客观规定计划,进行时表主观打算推测。 Flight 254 leaves at 5:30. (表主观打算) The plane is taking off an hour later.(主观判断) 5.现在进行时带always,often,usually,sometimes,等频率副词表感情色彩,一般现在时则没有此用法。
一般现在时的句子转换: (1)当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not变成否定句. 例: ①陈述句:She is a student. 疑问句→ Is she a student? 否定句→ She is not a student. ②陈述句:I can swim. 疑问句→ Can you swim 否定句→ I can not swim.
(2)当句子中即没有be动词,也没有情态动词时,则在主语前加助动词do (you,以及复数),does(单数she,he,it)变成问句; 在主语后谓语动词前加助动词don’t(I,you,以及复数), doesn’t(单数she,he,it)变成否定句,助动词后的动词要变成动词原形。 例: ①陈述句:We get up at 7:00 every morning. 疑问句→Do you get up at 7:00 every morning? 否定句→We don’t get up at 7:00 every morning. ②陈述句:She has a little brother. 疑问句→ Does she have a little brother? 否定句→ She doesn’t have a little brother.
一般现在时的表达方法: 主要通过谓语动词的变化和用时间词语来表示,其中最主要的是谓语动词的变化。现在一般时动词变化的规则是: 1.如果主语是名词复数和第一人称I、 we ,谓语动词不用做任何变化,即仍然用动词原形表示: We usually go to school at 7:30. 我们通常7:30上学去。[go] My parents give ten yuan to my sister every week.我父母每星期给我妹妹十元钱。[give]
特殊变化的词: be (是) - am,is,are I am she/he/it,名词单数都用 is we,you,they,名词复数都用are have (有) - have,has I,we,you,they,名词复数都用have she/he/it is,名词单数都用 has
助动词,不论单复数、不论什么人称都没有变化,都用 can,may,must,need,ought to 等。 而且,句子中有了助动词,谓语动词就不需要有任何变化了,即用动词原形表示。例: We have six classes every day. 我们每天上六节课。 I often get up at 6:30. 我经常6:30起床。 Jack likes Chinese food very much.杰克很喜欢中国饮食。 We can see some pictures on the wall. 我们能看到墙上的画。
4.一般现在时常用的时间词语 常用于一般现在时的词语有 sometimes/usually/often/every day(week,year)/ now/always 等。 这些时间词语只是辅助作用,这些词语也可用于其它的时态,所以谓语动词变化才是最关键的。 注意:当表现强烈的感情色彩时,尽管有如 always/never/seldom 等频率副词,但一般在频率副词前加上be动词,后面变为动词的现在分词形式。 例:My father lose his key again. He is always losing his key.