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