口是心非 歌词 : “怕是怕” What does "x Shi x" mean? I was listening to one of my favorite Chinese songs, 口是心非 (duplicity) by 张雨生, and there's a line in the chorus that says


  于是爱恨交错人消瘦 怕是怕这些苦没来由 


a) what does x 是 x mean?

b) what does it mean in this context?

c) what are other similar examples using this structure?

Thanks
To answer your questions:

a) what does x 是 x mean? Here the verb1 + 是 + verb1 is a common pattern used to emphasize the verb or to build up to the next part of the sentence.

b) what does it mean in this context? In this context it can be translated to "(what I am) afraid/scared is being afraid/scared of these pain/suffering without a reason/cause"

c) what are other similar examples using this structure? You can basically use this pattern on any verb, such as 

Example 1

A: 气什么? What are you angry about?

B: 气是气在你的无知! Angry, I am angry about your naivety/ignorance!

Example 2

A: 等什么? What are you waiting for?

B: 等是等你准备好! Waiting is waiting for you to get ready!