There in “there is nothing left” is an expletive.
An example of an expletive is saying "damn it."
An example of an expletive is adding "it is" in the sentence "time for us to eat."
Origin of expletive
- From Late Latin explētīvus serving to fill out from Latin explētus past participle of explēre to fill out ex- ex- plēre to fill pelə-1 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition