如果不计较时态和数的变化,为：
1.take
it take sb some time to do sth
2.spend
sb spend some time on sth
或：sb spend some time (in) doing sth
例如：It took me 2 hours to do my homework.
= I spent 2 hours on my homework.
= I spent 2 hours (in) doing my homework.
注：some time指“多少时间”,即时间段/一段时间；
句型中的in可以省略不写.