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①spend的主语通常是“人，即“某人在─花多少时间或金钱。 例句： 1)The boy spends a lot of money.(in) playing computer games. (那个男孩花了很多钱玩电子游戏。) 2)She spent lots of money on books last year. (去年她花费很多钱在书本上。) ②take前常以it作形式主语，作“做某事需要花多少时间。 It takes +(人)+时间+ to do sth. 1)How long does it take you to finish the work? (你需要多少时间才能完成那工作?) 2)It took me an hour to repair my bike. (我花了一个小时修理自行车。) 3)It takes a lot of courage to tell the truth. (说真话需要很大的勇气。) ③cost的主语通常是事物，即指 ①某物值多少钱②需要多少时间③某人花了多少钱④使(某人)(丧失)(事/物)+cost+(人)+时间/金钱 1)The watch cost me two hundred yuan. (这块手表花了我200块钱。) 2)Writing a novel cost plenty of time. (写本小说要花很多时间。) 3)The girl's bad behavior cost her parents many sleepless nights. (那个女孩的不良行为使得她的父母许多夜晚睡不着。) | 
