简答题“My boyfriend is a rich man” presupposes ________________.简答题Deixis concerns the relationship between the language structure and the ________in which it is used.简答题Social deixis are deictic terms indicating __________ __________ of the participants and their relations in the discourse.简答题Terms like “today, tomorrow, yesterday” are said to to be ___________in the sense that they take priority over “Monday, Tuesday, Wednesday”.简答题A presupposition can survive a negation test means that a presupposition generated by the use of a lexical item or syntactic structure remains ______________when negated.简答题Presupposition-carrying expressions and constructions carrying implicit meaning are called _______________.