especially的意思是“特别是”“尤其是”，它通常是用于单词前或短语前，如：
I like all kinds of fruit, especially apples. 各种各样的水果我都爱，尤其是苹果。
He likes the country, especially in spring. 他喜欢乡村，特别是在春季。
We want to invite some friends, especially Jim and John. 大家想邀请几个朋友，特别是吉姆和约翰。
但有时它也用于从句前，如：
Noise is unpleasant, especially when you’re trying to sleep. 噪音是让人不愉快的，特别是当你想入睡的时候。
问题：上面句子中的especially when you’re trying to sleep中的especially是用于时间状语从句前吧？especially还可用于什么从句前？
especially可以修饰时间或者缘由状语从句，依据《麦克米伦高阶》：especially + if / when / as / while / because / since，比如：
He did not want to upset his father, especially as his mother was so ill. 他不想让爸爸烦心，特别是在妈妈病得这么重的时候。
You will need to book your ticket in advance, especially if you want to reserve a seat. 你需要提前订票，特别是想订到座位的话。
Of or relating to soil, especially as it affects living organisms. 与土壤有关的，尤指土壤影响生物体的状况时。
In the second lef it will be hard, especially because well play away at Roma. 第二回合很不简单，尤其是大家是客场。
They really turned up for us on this thing. Its really important, especially while Americas mourning and grieving... 他们在这件事上很支持我。这尤为重要，尤其是在美国出于悲痛和忧伤中时。
Noise is unpleasant, especially when you are trying to sleep. 噪音让人讨厌，特别当你想睡觉的时候。
