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    七年級英語下冊Unit 1《Dream homes》Grammar

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    Unit 1《Dream homes》Grammar
    Learning aims:
    How to read and write cardinal numbers and ordinal number.
    數(shù)詞分為
      基數(shù)詞Cardinal numbers
      序數(shù)詞Ordinal number
    基數(shù)詞
     0 zero  1 one  2 two  3 three  4 four
     5 five  6 six  7 seven  8 eight
     9 nine  10 ten
     11 eleven  12 twelve  13 thirteen
     14 fourteen  15 fifteen  16 sixteen
     17 seventeen  18 eighteen  19 nineteen
    總結(jié):13-19這幾個數(shù)均以teen結(jié)尾。
     20 twenty  30 thirty  40 forty
     50 fifty  60 sixty  70 seventy
     80 eighty  90 ninety
     21 twenty-one  22 twenty-two ...
    總結(jié):20-90這幾個數(shù)均以ty結(jié)尾。
    20以上的非整數(shù),十位和個位之間加連字符。
    100    one/a hundred
    1,000    one thousand
    10,000    ten thousand
    100,000    one hundred thousand
    1,000,000    one million
    26   twenty-six
    260    two hundred and sixty
    2,261    two thousand, two hundred and sixty-one
    2,026    two thousand and twenty-six
    1,200,226  one million, two hundred thousand, two hundred and twenty-six
    4,056=four thousand and fifty-six
    23,813=twenty-three thousand, eight hundred and thirteen
    567,110=five hundred and sixty-seven thousand, one hundred and ten
    6,425,200=six million, four hundred and twenty-five thousand, two hundred
    注意:數(shù)目較大時,通常用逗號或空格隔開,從個位開始,三個一組,從右面開始三位一個逗號,第一個逗號是“thousand”,第二個逗號是“million”。
    Read the numbers
    1. 38  thirty-eight
    2. 45  forty-five
    3. 71  seventy-one
    4. 89  eigthy-nine
    5. 12  twelve
    6. 17  seventeet
    7. 80  eighty
    8. 55  fifty-five
    9. 121  one hundred and one
    10. 5,690  five thousand, six hundred and ninety
    11. 1001
       one thousand and one
    12. 342,650
       three hundred and forty-two thousand, six hundred and fifty
    13. 1,000,000
       one million
    14. 23,000
       twenty-three thousand
    15. 3,400,320
      three million, four hundred thousand, three hundred and twenty
    Simon is collecting some information about different countries. Help him read the numbers correctly.
    1. People from about 180 countries and areas live in New York.
    2. The CN Tower is 1,815 feet tall.
    3. Red Square in Moscow is about 91,000 square metres in size.
    4. France has an area of over 260,000 square miles.
    5. There are about 8,000,000 people living in London.
    6. Tokyo, the capital of Japan, has over 13,000,000 people.
    Ordinal numbers
    We use ordinal numbers to order things and events. We use them to talk about dates, floors, positions, etc.
    Eg: Women's Day is on the eighth of March.
        Our flat is on the seventh floor.
        He is always the first to come to school in our class.
    序數(shù)詞
    1 = one   → 1st = first
    2 = two   → 2nd = second
    3 = three → 3rd = third
    4 = four  → 4th = fourth
    5 = five  → 5th = fifth
    6 = six   → 6th = sixth
    7 = seven → 7th = seventh
    8 = eight → 8th = eighth
    9 = nine  → 9th = ninth
    10 = ten  → 10th = tenth
    11 = eleven    → 11th = eleventh
    12 = twelve    → 12th = twelfth
    13 = thirteen  → 13th = thirteenth
    14 = fourteen  → 14th = fourteenth
    15 = fifteen   → 15th = fifteenth
    16 = sixteen   → 16th = sixteenth
    17 = seventeen → 17th = seventeenth
    18 = eighteen  → 18th = eighteenth
    19 = nineteen  → 19th = nineteenth
    20 = twenty    → 20th = twentieth
    21 = twenty-one→ 21st = twenty-first
    22 = twenty-two→ 22nd = twenty-second
    基變序,有規(guī)律,詞尾加上th。1 2 3,特殊記,尾字母t d d。8加h,9去e,f來把ve替。ty變成tie,后跟th莫遲疑。幾十幾,幾百幾,變化個位就可以。
    第一句話:序數(shù)詞尾加th
    英語中的序數(shù)詞一般是“th”結(jié)尾。
    four -- fourth
    eighteen -- eighteenth
    第二句話:一二三特殊記
    英語序數(shù)詞中的第一、第二和第三不是“th”結(jié)尾的,他們有各自對應(yīng)的單詞。
    one -- first  two -- second    three -- third
    第三句話:八加“h”九去“e”
    基數(shù)詞eight和nine變序數(shù)詞時也有其特別之處。
    eight -- eighth     nine -- ninth
    第四句話:f來把ve替
    英語中基數(shù)詞five和twelve變序數(shù)詞時,有相同的變法,他們都是把末尾的兩個字母“ve”改成“f”,然后再加“th”。
    five -- fifth
    twelve -- twelfth
    注意:
    (1)英語數(shù)詞中整十(二十以上)由基數(shù)詞變序數(shù)詞的方法:把末尾的字母“y”變成“ieth”。
    twenty -- twentieth      eighty -- eightieth
    (2)英語數(shù)詞中第二十以上由基數(shù)詞變成序數(shù)詞的方法:十位數(shù)字保持基數(shù)詞,個位數(shù)字由基數(shù)詞變成序數(shù)致詞。
    twenty-one -- twenty-first
    seventy-nine -- seventy-ninth
    實戰(zhàn)演習(xí)
    Can you read these dates?
    1月15日  January fifteenth(15th)
    4月30日  April thirtieth(30th)
    7月8日   July eighth(8th)
    10月1日  October first(1st)
    5月29日  May twenty-ninth(29th)
    2月14日  February fourteenth(14th)
    Can you say the dates(說說日期):
     1. 2月14日     February 14th
     2. 3月8日      March 8th
     3. 4月21日     April 21st
     4. 1月29日     January 29th
     5. 8月12日     August 12th
     6. 9月10日     September 10th
     7. 10月1日     October 1st
     8. 12月25日    December 25th
     9. 6月15日     June 15th
    B2: Simon wants to tell his classmates where his friends live. Look at the building. Complete the sentences with the correct floor numbers.
    1. Elsa lives on the ______ floor.
    2. Ivan lives on the ______ floor.
    3. Mary lives on the ______ floor.
    4. Peter lives on the ______ floor.
    5. Ricky lives on the ______ floor.
    6. Wilson lives on the ______ floor.
    Exercise
    讀出下列各數(shù):
    180 ____________
    13,487 ____________
    38,000,000 ____________
    401 ____________
    24 ____________
    1,000 ____________
    給出下列各詞的序數(shù)詞形式
    five __________     thirty-one __________
    twelve __________   forty __________
    one __________      45 __________
    two __________      32 __________
    three __________    11 __________
    ten __________      23 __________
    eight __________    17 __________
    nine __________
    thirteen __________
    twenty __________
    用所給詞的適當(dāng)形式填空:
    1. My birthday is on July ______. (one)
    2. Her mother's birthday is on May ______. (five)
    3. Women's Day is on March ______. (eight)
    4. Her home is on the ______ floor. (ten)
    5. His home is on the ______ floor. (two)
    6. Our flat is on the ______ floor. (seven)
    7. It's May the ______. (nine)
    8. It's his ______ birthday. (fourteen)
    選擇
    1. There are _____ students in my school.
       A. fiftyth   B. fivety   C. fifty
    2. There are _____ books in the room.
       A. twenty-firSt   B. twentiety   C. twenty-five
    3. I have _____ dogs.
       A. twelve   B. twelfth   C. twelfe
    4. She has _____ erasers.
       A. eighth   B. eight   C. the eight
    5. He is _____ to come to school.
       A. first   B. the first   C. one
    6. Today is her _____ birthday.
       A. ten   B. the tenth   C. tenth
    7. Today is July _____.
       A. twenty   B. twentyth   C. twentieth
    8. It is Septemper _____.
       A. thirty   B. thirteen   C. thirtieth
    9. My father's birthday is on June _____.
       A. two   B. twoth   C. second
    10. There are _____ rooms in his house.
       A. eight   B. eighth   C. eighteenth
    11. He lives on _____ floor.
       A. the three   B. third   C. the third
    12. I am No. _____.
       A. twelve   B. twelveth   C. twelfth
    Homework
    Read and write the Cardinal and Ordinal numbers on P11 and P12.

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