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1、 Unit 3 Language in use目录目录语法聚焦0101课堂小测0202课后作业0303语法聚焦语法聚焦冠词和数词一、冠词冠词是限定词的一种，不能单独使用，常用于修饰名词。冠词有三种形式：不定冠词a/an，定冠词the和零冠词（即不使用冠词）。1.不定冠词不定冠词用来修饰可数名词单数，指人或物中的某一个或某一类，但不具体说明是何人何物。在名词前使用a还是an取决于该名词的读音。如果首字母的读音是元音音素，应用an；如果首字母的读音是辅音音素，应用a。2.定冠词the是定冠词，在以辅音开头的单词前读/，在以元音开头的单词前读/i/。可数名词的单数、复数及不可数名词前均可使用定冠词。
2、冠词冠词用法用法例句例句不定冠词a/an（1）泛指某一类的人或事物（2）首次提到某人某物时（3）用于表示“一”这个数量（4）用于表示价格、速度、频率（5）用于序数词前，表示“又一”（6）用于某些固定短语中（1）A panda is very lovely.（2）I have a book.It is small.（3）I have a mouth and two eyes.（4）Tomato is two yuan a kilo.The limited speed of the road is 60 miles an hour.I go hiking once a month.（5）I fai
3、led three times,but Ill have a fourth try.（6）have a good time in a hurry have a look a few3.冠词的用法归纳定冠词the（1）特指某人或某物（2）指谈话双方都知道的人或物（3）指前文已经提到过的人或物（4）用于世界上独一无二的事物（5）用于序数词和形容词的最高级前（6）用于西洋乐器或某些中国乐器的名词前（7）用于姓氏的复数形式之前，表示“一家人”或“夫妇两人”（8）用于形容词前，表示一类人或一类事物（9）用于身体部位或方位名词前（10）用于由普通名词构成的专有名词前（11）用于某世纪、某年代前（1）The
4、 man in the car is Mr Smith.（2）Open the door,please.（3）She has a son.The son works in Beijing.（4）The sun is bigger than the earth.（5）the first lesson the tallest girl（6）play the guitar play the pipa（7）The Smiths are going to Qingdao for a vacation.（8）the rich the old the blind（9）on the head in the s
5、outhwest（10）the Great Wall the United States（11）in the 2020s/2020s零冠词（即不使用冠词）（1）指示代词前不用冠词（2）形容词性物主代词前不用冠词（3）名词所有格前不用冠词（4）在some,any,no,every等限定词前不用冠词（5）表示语言、科目、三餐、球类、棋类的名词前不用冠词（1）this car（2）his desk（3）Chairman Xis speech（4）some people any other country no photo every person（5）in English learn geograp
6、hy have breakfast play football play chess零冠词（即不使用冠词）（6）表示星期、月份、季节、节日的名词前不用冠词（7）表示人名、官衔、称呼、国名、地名的名词前不用冠词（8）“by+交通工具”中间不用冠词（9）某些固定短语中不用冠词（6）on Sunday in February in autumnon Teachers Day（7）Donald Trump President Trump Uncle Paul China Guangzhou（8）by bus by car by air by plane（9）at home in red go to s
7、chool on time at first day and night at work go to bed on foot在某些词组中，名词前用冠词与不用冠词的意义有所不同in front of 在（范围外）的前面 in the front of 在（范围内）的前面in hospital 住院 in the hospital（因事）在医院go to hospital去看病 go to the hospital（因事）去医院at school在上学 at the school在学校里in class在上课 in the class在班级里at desk在读书 at the desk 在课桌旁g
8、o to bed 上床睡觉 go to the bed（因事）到床上at table 在进餐 at the table在桌子旁边 take place发生 take the place代替二、数词1.百位数的数词的读法个位基数词形式加“hundred”,意为“几百”，在几十几与百位间加上and。如：101读作：a hundred and one320读作：three hundred and twenty648读作：six hundred and forty-eight2.千位数以上的数词的读法从数字的右端向左端数起，每三位数加一个千位分隔符“,”。从右开始，第一个“,”前的数字后添加thous
9、and；第二个“,”前的数字后添加million；第三个“，”前的数字后添加billion；然后一节一节分别表示，两个千位分隔符之间最大的数为百位数形式。如：2,648读作：two thousand，six hundred and forty-eight16,250,064读作：sixteen million，two hundred and fifty thousand，sixty-four5,237,166,234读作：five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,tw
10、o hundred and thirty-four3.分数的表示法（1）分数是由基数词和序数词一起来表示的。基数词作分子，序数词作分母，除了分子是“1”以外，其他情况下分母都要用复数形式。如：one halfone thirdtwo thirds three fourths（2）当分数后面接名词时，如果分数表示的值大于1，名词用复数形式；如小于1，名词用单数形式。如：metre 二分之一米metres 一又二分之一米课堂小测课堂小测eportncrease一、根据中文意思或首字母提示，用单词的适当形式填空1.Wide reading will i_ your vocabulary.2.We s
11、hould make a r_ to the head teacher before we do it.causeuietgovernment3.You must give up smoking.It can_ （引起）some serious illnesses.4.How q_ this evening is!I think you must sleep well.5.Thanks to the growing population，the_ （政府）needs to build more homes.the/二、用a，an，the或/填空6.Do you know _ girl over
12、 there?Yes,she likes playing _ basketball a lot.7.Its time for_ breakfast./theaan8.Chinese people usually eat zongzi on _ Dragon Boat Festival.9.We all know _ earth goes round _ sun.10.I think English is _ useful language,and its also _ important language.thetheC三、单项填空（）11.If you want to take_ short
13、 ride in the city,choose _ shared bike.A.a;B.the;theC.a;aD.;aC（）12.Qingdao is a beautiful city that lies in_ east of China.A.anB./C.theD.aA（）13.Because of the special situation this year,about_ of the students in our school _ having classes on the Internet at home.A.two thirds;areB.two third;isC.sec
14、ond thirds;are D.two thirds;isC（）14.Will you come to my_ birthday party next Friday,Susan?Yes,of course.And Ill bring a nice gift for you.A.eighteenB.eighteensC.eighteenthD.the eighteenth（）15.Nowadays,_ people like HUAWEI phones better,and about _ of them are adults.A.the number of；four fifthsB.a nu
15、mber of；four fifthC.a number of；four fifthsD.the number of；four fiveC四、语法选择Do you know 16 people there were in the world 200 years ago?Just one billion.17 only 100 years later,the population was increased by 100 percent.In 1971,about 3.5 18 people lived on the earth.Forty years later,the number doub
16、led（翻倍）.19 31st October,2001,the 7 billionth world citizen（公民）,20 baby girl was born in the Philippines（菲律宾）.At this speed,it will shoot up to 8 billion by the year 2025.Most new babies were born in developing countries.Most families have four or five children.In many 21 countries,the population is
17、increasing 22.Most families have only one or two babies.In 1950,about 25 percent of the worlds population lived in developed countries.By 2050,the number will reduce to 10 percent.In many developing countries,people are now short of food,water and medicine.Whats worse,farmland 23 less and less.Farme
18、rs are moving to cities to make a living.But cities cant satisfy（满足）24 needs at all.Finally,many people cant find jobs,and they become poorer and poorer.25 these problems,many developing countries are taking measures to control the population.（）16.A.how oftenB.how much C.how manyD.how far（）17.A.ButB
19、.AndC.Because D.So（）18.A.billions ofB.billion of C.billionD.billions（）19.A.InB.At C.ForD.On（）20.A.the B.aC.anD./CACDB（）21.A.develop B.develops C.developingD.developed（）22.A.slow B.slower C.slowest D.slowly（）23.A.become B.is becoming C.becomesD.are becoming（）24.A.TheyB.them C.their D.theirs（）25.A.To solveB.SolveC.Solving D.SolvesDADBC