pay的主语是人,sb pay(s) some money for sth.... 付款的意思 spend的主语是人,sb spend money(or time) in doing sth 偏重花费(时间或金钱)的意思 cost主语是物,而且大多是形式主语it.sth cost sb ..to do
pay 后面跟for 用于花费多少金钱 主语是人 spend (in) doing sth 主语是人 spend some time in someplace 主语是人 cost 的主语必须是物 而且多用于花费金钱 它们区别就是主语和介词
第4个回答 2011-06-26
人+pay+钱+for+sth I paid 100 yuan for the bike. 人+spend+钱/时间+on sth/ (in) doing sth I spent 100 yuan on the bike/(in) buying the bike. I spent many hours on this book/(in) reading this book.