Student: you mean, rewrite the whole thing? I really swamped. Therere deadlines wherever I turn in and I dont really know how much time I could give it.
Professor: well, its busy time, with spring break coming up next week.
请问老师，这里的 whereever I turn in的使用方法是什么？
Therere deadlines wherever I turn in.
这个句子的意思是非常明确的。我的不少作业都快到截止日期了。（所以没时间重新写）。依据上下文了解句义即可，不必细扣某个词的具体使用方法。作者大概引申用某个词汇。你的目的是了解句子意思。