Hi would you tell me where we can emit the verb ''be'' in nominal sentences? For example, in the below sentence, it is grammatically okay we drop the verb ''is'' after ''its plight''! I'm confused where we are allowed to change a sentence in this way?! The sentence: The suffering polar bear has become a symbol of a warming world, its plight IS a warning that the clock is ticking. The sentence without the verb: The suffering polar bear has become a symbol of a warming world, its plight a warning that the clock is ticking.