1. （数字）80
Eighty is the number 80.
2. 八十几；八十多
When you talk about the eighties, you are referring to numbers between 80 and 89. For example, if you are in your eighties, you are aged between 80 and 89. If the temperature is in the eighties, the temperature is between 80 and 89 degrees.
3. （二十世纪）八十年代
The eighties is the decade between 1980 and 1989.
1. （数字）80
Eighty is the number 80.
e.g. Eighty horses trotted up.
80匹马小跑起来。
2. 八十几；八十多
When you talk about the eighties, you are referring to numbers between 80 and 89. For example, if you are in your eighties, you are aged between 80 and 89. If the temperature is in the eighties, the temperature is between 80 and 89 degrees.
e.g. He was in his late eighties and had become the country's most respected elder statesman.
他年近九旬，已成为该国最受尊崇的政界元老。
3. （二十世纪）八十年代
The eighties is the decade between 1980 and 1989.
e.g. He ran a property development business in the eighties.
他在20世纪80年代经营着一家房地产开发公司。
eighty 情景对话
在商店
A：Would you give me some fruits? How much are these oranges?
能给我一些水果吗？这些桔子要多少钱？
B：Seventy cents a piece.
一个7 角。
A：How about this one?
这个怎样？
B：Sixty cents a piece.
6 角一个。
A：Well, I’ll take five of the seventy cent ones, and are those grapefruits sweet?
哦，我要5 个7 角的，另外这些葡萄柚甜吗？
B：Sure! They are very fresh, first of all. We sell at a bargain, and you make a wise purchase if you buy them today. Eighty cents only, a piece.
当然甜！最重要的是新鲜。我们便宜卖，如果你今天买就很划算，一个只要8 角钱。
A：I follow you and I’ll take three just for my trial.
我懂你的意思，我买3 个试试。
eighty的反义词
B：Thank you very much and anything else?
非常谢谢你，还要其他东西吗？
A：That’s all. Thank you.
就只要这些了。谢谢。