Clause relations is a study of the various relations which connect one sentence with another as members of a sequenced discourse. Below is a further explanation on clause relation.
I love going to the fair // during the summer.
The first part of the sentence is a clause and the latter part is an adverbial phrase of time indication when or the circumstance in which the verb could be valid.
Therefore, the clause relation refers to the connection between clauses or elements of the the clause complex.
learn more about clause relation: https://brainly.com/question/20483456