I need to earn a bit extra this month.

我这个月需要挣点外快。

《牛津词典》

Only these few days I began to realize that the coffee need to be finished within a month after it is opened.

这几天，我开始觉得这咖啡在开封后应该在一个月里喝完。

youdao

The examples might be, “I want to exercise 3 days a week for a month”, and “I need to do 30 crunches every day for a month”, “In two months I want to be able to run 3 miles.”

例如“我想要在一个月内每周锻炼3天”，和“我一个月里每天要做30个仰卧起坐”，“在两个月里我要能够跑3英里。”

youdao

For openers, as I advocated in these pages last month, we need a two-pronged fiscal package.

WSJ: Alan Blinder: Stimulus Isn't a Dirty Word

In fact, I did not need one month, but finished it in a week.

CNN: Interview with Nelson Shin