by的后面加什么词

She'll have had the results by now.

她现在应该知道结果了。

Day care is provided by the company she works for.

她工作的那家公司有日托。

All the statistical computations were performed by the new software system.

所有的`统计计算均由新的软件系统完成。

They won by a single goal after extra time.

他们在加时赛中仅踢进一球即获胜。

They've increased the price by 50%.

他们已经把价格提高了50%。