【今日任务知会于心】1.检查上次作业，查漏补缺；2.复习必修三Unit 1 词汇与课文；3.复习英语词类——名词与冠词；4.掌握英语词类——数词；5.熟练语法填空题型与解题技巧。
【课前热身小试牛刀】1、考查必修一的词汇。
（见附页——测试题）【知识精讲讲练结合】一、数词（详见思维导图）二、必修三Unit 1精讲：（见附页）三、语法专项——数词(见思维导图)数词1、定义:表示“数目多少”和“顺序先后”的词，叫数词。
23、基数词的构成（1）表示1-12的基数词：一个一个地记。
1 one;2 two;3 three;4 four;5 five;6 six;7 seven; 8 eight; 9 nine; 10 ten; 11 eleven;12 twelve（2）表示13-19的基数词：由3、4、5、6、7、8、9词加上词尾-teen构成。
其中-teen表示ten。
*13= thirteen （thir=three）14=fourteen*15=fifteen (fif=five)16=sixteen17=seventeen*18=eighteen (eigh=eight)19=nineteen（3）表示“整十”的基数词：由2、3、4、5、6、7、8、9的基数词加上词尾-ty构成。
其中-ty表示ten。
*20 twen ty (twen-=two)*30thir ty(thir--=three)*40for ty(for-=four)*50 fif ty (fif-=five)60 six ty70 seven ty*80 eigh ty (eight-=eight)90 nine ty（4）表示“带零头”的两位数。
eg. 21,35, 46, 57,63, 74, 85, 98等。
构成模式：表示“整十”的基数词+ 连字符+ 表示1-9的基数词整十零头例如：21=20+1=twenty-one 35=30+5=thirty-five46=40+6=forty-six 57=50+7=fifty-seven69=60+9=sixty-nine 72=70+2=seventy-two87=80+7=eighty-seven 98=90+8=ninety-eight（5）表示“三位数以上”的基数词。
1）要用到单位数词billion（十亿），million（百万）、thousand（千）、hundred（百）。
2）选用单位以分节号为准。
3）单位数词要用原形。
4）百位与十位之间加and。
十位与个位之间加连字符。
空位用and。
例如：1) 百位数：583 = 5个“百”+ 83= five hundred eighty-three809=8个“百”+ 空位+ 9= eight hundred and nine2) 千位数：6,782=6个“千”+ 7个“百”+82= six thousand seven hundred and eighty-two3) 万位数：73,695=73个“千”+6个“百”+95=seventy-three thousand six hundred and ninety-five4) 十万位数：837,594=837个“千”+ 5个“百”+94=eight hundred and thirty-seven thousand five hundred and ninety-four 5) 百万位数：2,837,594= 2个“百万”+ 837个“千”+594= two million eighty hundred and thirty-seven thousand five hundred and ninety-four4、序数词的构成（1）第1、第2、第3：单独记。
第1：first; 第2: second; 第3: third。
（2）第4至第19：由基数词加上词尾-th构成，个别基数词有变化。
4th fourth *5th fifth 6th sixth7th seventh *8th eighth（发音不变）* 9th ninth (发音不变) 10th tenth11th eleventh *12th twelfth13th thirteenth14th fourteenth 15th fifteenth 16th sixteenth17th seventeenth 18th eighteenth 19th nineteenth（3）表示“整十”的序数词。
构成模式：表示“整十”的基数词，变词尾-y为-ie，然后再加-th。
20th twenty -------- twentieth30th thirty ------- thirtieth40th forty ---------- fortieth50th fifty ------ fiftieth60th sixty --- sixtieth70th seventy --- seventieth80th eighty --- eightieth90th ninety --- ninetieth（4）单位序数词100th one hundredth1000th one hundredth第一百万one millionth第十亿one billionth（5）其他序数词1）个位数是“零”序数词：以“整十”的序数词结尾，其他位用基数词。
e.g. 第580：five hundred and eightieth。
2）个位数是1-9的序数词：以1-9的序数词结尾，其他位用基数词。
e.g. 第2,587: two thousand five hundred and eighty-seventh。
***【提示】完成以下练习。
一、按实际情况填空。
1. There are ______ days in a week.2. There are _______ days in a year.3. There are ________ seconds in one minute and ________ hours inone day.4. August is the ______ month of a year.5. Wednesday is the _______ day of a week.二、写出下列数字对应的基数词和序数词。
9 __________, __________ 12 __________, _________15 _________, _________ 20_________, __________41 __________, __________ 38_________, __________三、改错。
1. There are three hundreds people in our village.2. There are hundred of students on the playground.3. Ten thousands students got together in Beij ing Tian’an Men Square.4. Thousands people are needed to finish the work.5. The population of this city is about three millions.四、选择题。
1. 265 is ____________.A.two hundreds and sixty–fiveB.two hundred and sixty–fiveC.two and sixty–fiveD.two hundreds sixty five2. We are going to learn ________ next week.A.Lesson TwelveB.Lesson TwelfthC.Twelfth LessonD.The Lesson Twelfth3. Two _____ died of cold last winter.A.hundreds old peopleB.hundred old peopleC.hundreds old peoplesD.hundred old peoples4. He is a student of _______.A.Class FirstB.the Class OneC.Class OneD.First Class5. About ______ of the workers in the steel workers are young people.A.third – fifthsB.three – fifthsC.three – fivesD.three – fifth6. One – fourth of an hour is ______.A.25. minutesB.15 minuteC.30 minutesD.a quarter7. Several ______ ago, our country was covered by thick forestes.lion of yearlion yearlions yearslions of years8. There were seven ______ Negroes working on the farm.A.hundredsB.hundred ofC.hundreds ofD.hundred9. There are ______ students in our class.A.fortiethB.fourtyC.fiftiethD.fifty数词（二）一、基本用法(一)基数词的基本用法1.定语e.g. Fifty thousand London dockers are out on strike.2.主语数词作主语，谓语动词用单数。
e.g. Two months is quite a long time.Five is an odd number.3.宾语或介词宾语e.g. How many do you want? -----eight, please.The city has a population of four million.4.表语e.g. We are altogether fourteen.Five plus seven is twelve.5.同位语e.g. What work are you to assign us three?Is there room for us two?6.基数词＋单数名词＋形容词构成合成形容词。