名词百分比，百分数; 百分之一 形容词百分之…的，每一百中有…的; 百分之…支付利息的 副词以百分之…地，每一百中有…地
形容词
1. They went on strike Monday in demand of a 30 percent wage increase.
他们于星期一举行罢工，要求增加百分之三十工资。
副词
1. percent
1. I am 100 percent in agreement.
我百分之百同意。
2. I am a hundred percent in agreement with you.
我完全同意你的意见。
名词
1. Over ninety percent of the islanders here are illiterate.
这儿的岛民，百分之九十以上都是文盲。
2. Thirty percent of the farmland has been planted to oil crops.
百分之三十的农田已种上油料作物。
3.
3. He spends a large percent of his income on food and drink.
他把收入的大部分化在食物和饮料方面。
打折
B：It’s (thirty percent off / seventy percent of / 30 percent cheaper than) the regular price.
（七折/让利30%/便宜30%）出售。
A：Well, that’s a good deal.
哇，这到很划算。
