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forty
fifty
How much?
20
twen ty
30
thir ty
40
for ty
50
fif ty
Do you find?(你发现了吗?)
Tip: 数字几十的结尾都是“-ty”
sixty
seventy
eighty
ninety
Can you spell?
twenty-five
Can you say?
Tip:21-99的构成是在十位数和个位数之间加
连字符“-“。如21:twenty-one
thirty-five
Can you say?
thirty-six
Can you say?
thirty-seven
Can you say?
forty-two
Can you say?