spend...on sth.(n) 花钱(或时间)在 ... 1) Mr.White _____ most of his spare time ___ his garden. 2) Little John _____ his money on the MP3. 比较: spend...(in) doing sth.(n) 花钱(或时间) 做 某事 3) Mr.White _____ most of his spare time in ___ (water) his garden. 4) Little John _____ his money __ buying the MP3.