buy和purchase的用法    动词buy和purchase都表示“买，购买”，细微差别如下。 1.buy意思是“买”，是普通用词，指平常生活上购买东西，也可以指重大的交易，一般着重在花钱这一点上。比如： 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？ 2.purchase意思是“买”，是正式用词，常用在重要场合，指通过谈判或者是其他努力大量买进，着重购买东西，这一点常被 buy代替。比如： He purchased a ticket and went up on the top deck.他买了张票，上了顶层。It was decided (that) the school should purchase new software.已经决定学校要购买新软件。 The equipment can be purchased from your local supplier.这种设备可从您当地的供应商购买。 They purchased the land for $1 million.他们以100万元买下了这块土地。Victory was purchased at too great a price.这次胜利的代价太大了。