花费某人某事件做某事的几种说法.

spend sth on sth
spend sth （in）doing sth
eg：I spent two hours working out the math problem./I spent two hours on the math problem.
我花了两小时做这道数学题.
take sb sth to do sth
eg：It may take you a little time to give an explaination.
你可能得花点时间解释一下.
cost sb sth （to do sth）
eg：The nice jacket cost me just 5 pounds.
这件漂亮的JACKET只花了我5英镑.
sb pay sth for sth
eg：The international corporation paid $50,000 for the firm,and $2,000 for its goodwill.
这家跨国公司用五万美元买下了这家商号,两千美元买下了它的信誉.
投资：sb invest sth in sth
eg：I've invested a lot of time and effort in this plan.
我已在这计划中投入了大量的时间和精力.

spend sometime/somebody in doing sth
take sb to do sth
cost sb to do sth
sb可以替换sth