buy是动词。
vt. 购买;买得起;获得;贿赂;相信
n. 购买;所购的物品;合算的东西
Money can't buy you happiness.金钱不能为你买到幸福。
Where did you buy that dress?
那件连衣裙你是在哪里买的?
I've sent Tom to buy some milk.
我叫汤姆去买牛奶了。
It's cheaper to buy in bulk.
大批购买便宜些。
How long ago did you buy it?
这东西你是多久以前买的?