半价用英语的说法：half price。
一、短语搭配：
半价票：half-price ticket、半价出售：sell at half-price; half-price sale、降半价：cut price by half、以半价买：buy sth at 50% off、给学生半价优惠：charge half-price for students。
二、half的意思：
n. 一半；半场，半局。
adj. 一半的，不完全的。
adv. 一半地，部分地。
三、price的意思：
n. 价格，价值；代价。
v. 给?定价；问?的价格。
例句：
1、本店断码鞋半价出售。
All the shoes in our store are sold at half price due to limited sizes.
2、儿童半价入场。
Children are (admitted) half price.
3、所有食品和饮品买一送一，其他商品均为第二件半价。
Buy one get one free on food and drink products, and buy one get one half price on absolutely anything else.
4、我在减价时以半价买的胸针。
a brooch I bought half-price in the sale.
5、65岁以上的人可以得到半价票。
People who are 65 years old and over can get half-price tickets.
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