题目内容：

做某事用多少时间用英语怎么说
比如 i watch tv thirty minutes.还是应该说 i watch tv for thirty minutes.
要不要加上for?

优质解答

要加上for.
有固定句式 It takes sb.some time to do sth.
It took me thirty minutes to watch TV.
好吧,有人探讨很好
It cost sb.money/time to do sth.用在这里应该更好些
或者I spend some time on sth./to do/doing sth.