interpersonal Adjunct, and like the conjunction group, it can serve as conjunctive Adjunct In add ition, it can be rank-shifted to serve as post-modifier in a nominal group or an ad verbial group 6.6 Word classes and group functions Word classes and their typical function in groups(see Table 6-16 on p. 362)4 interpersonal Adjunct, and like the conjunction group, it can serve as conjunctive Adjunct. In addition, it can be rank-shifted to serve as Post-modifier in a nominal group or an adverbial group. 6.6 Word classes and group functions Word classes and their typical function in groups (see Table 6-16 on p.362)