1.5 000 000

　　(a)five million____________________(b)five millions

　　2.47.5%

　　(a)forty seven half percent(b)forty seven point five percent

　　3.632

　　(a)six hundred and thirty two(b)six hundred thirty two

　　4.4/5

(a)four fifths____________________　(b)four five 　　

　　Ask the students to complete them individually and then collect the answers in the whole class.After that,give the students several minutes to read them aloud.

　　Suggested answers:

　　1.a　2.b　3.a　4.a

　　T:Now let's come to Activity 2.Read the sentences aloud and attentively.

　　1.Rice was first grown about 5000 years ago.

　　2.China exports about 1.5% of its rice.

　　3.Australia produces about 250 000 tons of rice.

4.2/3 the world's population regularly eat rice. 　　T:OK,class.Now are you sure you can say the numbers correctly?Dictate some numbers to your partner,including big numbers,fractions and percentages.Then I will give you a quiz.(After the students practice with each other,the teacher gives them the following quiz.Read the mathematical terms correctly.)

　　(Show the numbers on the screen or on the blackboard.)

1.1035　2.3/7　3.46%　4.2 840 000　5.$95.5 　　Ask the individual to read them,one number a student.After the students complete them,let them read numbers together.

　　Suggested answers:

　　1.one thousand and thirty five　2.three sevens　3.forty six percent　

　　4.two million eight hundred and forty thousand　5.ninety five point five percent

　　Step 3 Grammar 1:The Passive Voice

　　T:Now let's come to revision of the passive voice.

　　First please study the sentences in Activity 1 on Page 33.

　　(Show the following sentences on the screen.)

　　a.Rice is grown in many other Asian countries.

　　b.Researchers were brought in from all over China.

　　c.The research was supported by the government.

　　d.In Pakistan rice will be grown in many parts of the country.

e.The new hybrid rice has been developed by the Yuan Longping High-tech Agriculture Company of China. 　　T:Now answer the following questions.(Show them on the screen.)

　　1.Which sentence is in the present simple(passive voice)?

　　2.Which sentences are in the past simple(passive voice)?

　　3.Which sentence refers to the future?

　　4.Which sentence is in the present perfect?

5.Which sentences are easy to transform into the active voice?Why? Ask the students to complete them in pairs,then call back their answers from the whole class,having one student ask the question and another read the example sentence.