I have an important math test tomorrow.
我明天有个很重要的数学考试。
I studied for it, but I am still so nervous.
我为它学习过了，但是我还是很紧张。
If it snows enough tonight, I wont have to take the test.
如果今晚下雪足够大，我就不用去考试了。
I need a snow day!
我需要一个雪天！
我需要一个下雪天（I Need a Snow Day）