老师您好，我在阅读《To Kill A Mockingbird》时读到这么一个句子感觉不太好理解：

His family was from Maycomb County originally, his mother worked for a photographer in Meridian, had entered his picture in a Beautiful Child contest and won five dollars. She gave the money to Dill, who went to the picture show twenty times on it.

请问结尾处的 it 指代的是 the money 吗？如果是的话，那就是on the money (five dollars)，表达“ 使用某物做了某事  do sth. with sth.”  此处为什么用介词 on 而不用介词 with? 这是规范的英文表达吗？

回答如下：

结尾it是指代the money,在表示在某事上花钱要用介词on

She gave the money to Dill, who went to the picture show twenty times on it. 

【参考译文】她把这些钱给了迪尔，迪尔用这笔钱看了二十场电影/画展。

关于介词on与金钱有关2个搭配

【1】介词把钱花在…方面money +on sth

I resolved not to waste money on a hotel.

我决心不在住旅馆方面浪费钱。

He spent more on feeding the dog than he spent on feeding himself.

他喂狗花的钱比自己的饮食开销还多。

More money should be spent on education and housing.

应当在教育和住房方面投入更多的资金。

【2】do sth +on +金钱 用钱做了某事

He gets by on very little money.

他靠著很少的钱过日子。

She can't get by on so little money.

她无法靠这一点钱生活下去。

They lay too much stress on money.

他们太看重金钱了。