sb spend time/money on sth/doing sth 某人花费时间或金钱去做什麼事情
EG：I spend 1hour doing my homework.
I spend time on listening to music
I spend time on my homework
.I spent time on doing my homework last night.
I spend a lot of time on doing my homework.
sb spend time/money on sth/doing sth 某人花费时间或金钱去做什麼事情
EG：I spend 1hour doing my homework.
I spend time on listening to music
I spend time on my homework
.I spent time on doing my homework last night.
I spend a lot of time on doing my homework.