existential sentences造句

Conversely, existential sentences are upward absolute from a structure to any structure containing it.
It has been proposed that elements like expletive there in existential sentences and pro in inverse copular sentences play the role of dummy predicate rather than dummy subject so that the postverbal Noun Phrase would rather be the embedded subject of the sentence.
This is the existential sentence of psychoanalytic discourse according to Lacan, and the negative one is " " Il n'y a pas de rapport sexuel " " & mdash; there is no such a thing as a sexual relationship.
It's difficult to find existential sentences in a sentence. 用existential sentences造句挺难的