i will spend what i have to buy you a coat

问题描述:

i will spend what i have to buy you a coat
为什么不说i will spend what i have buying you a coat

一般说来 to do sth 表示还没有做的事情 比如 I have a lot of homework to do.在此句中 作业还没有做 而是要去做 所以用 to do .同理,我要花费我所能去给你买一个大衣,还没有买,用to do 合适!