七十英语怎么说写

"Seventy" in English is written as "seventy". It is a cardinal number that represents the quantity of 70. It is formed by combining the number seven and the suffix "-ty", which is used to form the numbers between 70 and 90. The word "seventy" comes from the Old English word "seofontig", which is a combination of "seofon" (seven) and "-tig" (tens).

Examples in English:

He is seventy years old.
(他已经70岁了。)
The temperature is seventy degrees.
(气温是70度。)
She has seventy dollars.
(她有70美元。)