Chapter Three

Ordinal Numbers

In set theory, an ordinal number, or just ordinal, is the order type of a well－ordered set, such as 1st,2nd,3rd,4th etc. They are usually identified with hereditarily transitive sets. Ordinals are extension of the natural numbers different from integers and from cardinals. Like other kinds of numbers, ordinals can be added, multiplied.

A. Listen carefully and write down the ordinal numbers which are read.

For example, you will hear“Peter's birthday is on the 16th of July”and you should write down the number“16th”on the blank.

1. John won the_______place in the running race.

2. It is the_______of November.

3. The present Queen of U.K. is Elisabeth the _______.

4. The_______Olympic Games were held in Beijing in 2008.

5. China is the_______largest country in the world.

6. Your seat is in the_______row.

7. My grandma lives on the_______ floor of the building.

8. China will celebrate the_______national day of the country.

9. Today is the_______wedding anniversary of Mr. and Mrs. Smith.

10. The tennis match will be held on the_______of September.

B. Some ordinal numbers are difficult to understand in rapid speech and some are easily to be confused with others. Listen carefully and draw a circle around the correct number you've heard.

1. The first modern Olympic Games were held in the（18th,19th）century.

2. The（16th,60th）FIFA World Cup was held in France in 1998.

3. The little boy won the（6th,8th）prize in the chess competition.

4. She is the（2nd,3rd）child of the family.

5. The football season begins on the（1st,21st）of June.

6. The per capita GDP of U.S. ranked the（4th,5th）in the world in 2017.

7. You can enjoy the SPA on the（17th,19th）floor of the hotel.

8. You could find the explanation of this word in the（5th,6th）chapter of this book.

9. The students are celebrating the（22nd,23rd）birthday of their school.

10. It is the（1st,4th）time for him to be a volunteer of the Greenpeace Organization.

Exercises

1. You are going to hear a list about the cities and the corresponding Olympic Games they have hosted. Listen carefully and match the city name in Column A with the corresponding Olympic Games in Column B.

2. Listen to the following sentences carefully and write down the cardinal numbers or the ordinal numbers you've heard on the blanks.

1）The shoe size for Mary is _______.

2）Look at the_______paragraph of the article.

3）Texas is the_______largest state in the U.S.A..

4）People in the Philippines were celebrating the_______Sinulog.

5）Vincent Van Gogh was the famous artist in the_______century.

6）Today's temperature is_______ Fahrenheit.

7）Petronas Twin Towers building in Malaysia is the_______highest building in the world.

8）Henry bought_______books for his classmates.

9）James was_______minutes late for the meeting.

10）It is the_______bridge in my hometown.