我要买这个，我想买这个，某物多少钱和你穿多少码的英文。

我要买这个：I wanna get this/ I would like to buy XXX某物多少钱：How much is this?你穿多少码：What is your size?/ How big do you need? 回答： Size XXX 例句：A size 36 black belt.一条36码的黑皮带···