Unit 9 Unit 9 How much is How much is it
B Let's LearnA Let's Listen and SayC Let's ActD Let's ReadE Let's Read and WriteF Let's ChantG Let's Have Fun•RevisionRevision 数字的表达数字的表达• (( 1~121~12 ))• one 1one 1two 2two 2 • three 3three 3four 4four 4 • five 5five 5six 6six 6 • seven 7seven 7eight 8eight 8• nine 9nine 9ten 10ten 10• eleven 11eleven 11twelve twelve 12 12 •RevisionRevision 数字的表达数字的表达• (以(以 teenteen 结尾的数字)结尾的数字)• • thirteen 13fourteen 14 • fifteen 15sixteen 16 • seventeen 17eighteen 18 • nineteen 19 •RevisionRevision 数字的表数字的表达达• (几十几)(几十几)• twenty-one 21twenty-one 21• thirty-five 35 thirty-five 35 • forty-nine 49forty-nine 49• sixty-eight 68sixty-eight 68• fifty-two 52fifty-two 52• eighty-four 84 eighty-four 84 •Write English numbersWrite Engli