Construction Grammar and typology share many assumptions and each approach can fruitfully inform the other. Both fields start from a pairing of form and function and treat lexicon, morphology, and syntax as a continuum of varying strategies to express function. Cross-linguistic comparison leads to a distinction between language-particular categories and structures, determined by distributional analysis, and comparative concepts that are cross-linguistically valid. Strategies are morphosyntactic formal structures that are defined language-independently and constructions are comparative concepts; as such, constructions and their components can be aligned across languages, and strategies allow the alignment of morphosyntactic structures used for constructions across languages. Typologists have also developed representations of the conceptual relations between the functions of different constructions in terms of conceptual spaces. Typological diversity also suggests that the only universal syntactic structure is the part–whole relation between a construction and its constituents. Both Construction Grammar and typology give a prominent role to diachrony, seeing constructions as lineages.

Chapter 4 of Discourse Syntax (Variation in the Middle) introduces students to syntactic patterns that lead to sentences with non-canonical subjects or variation in the way the verb’s arguments are realized, including the object position. After discussing principles of canonical argument realization, including facts from language acquisition and insights from psycholinguistics, the chapter discusses the passive construction, including in preposition stranding contexts, and the verb-particle construction (also known as “phrasal verbs”), in the context of establishing topics, arranging given and new information, and shifting complex material to the end of the sentence (Principle of End-Weight). Woven into these explanations are data from current research in the text-linguistic and variationist approach and attestations from freely available corpora.

Chapter 2 of Discourse Syntax (Concepts, Data, and Methods) further clarifies the need for studying patterns of syntactic use and variation in English with emphasis on the surrounding text (co-text), which is itself embedded in a specific discourse situation (context). It also differentiates between sentences and utterances and introduces the notion of “register” as a grouping of linguistic patterns arising from the discourse situation and distinguishes between a text-linguistic (focus on text) and a variationist perspective (focus on a syntactic variable) in studying syntactic variation, as well as methods of data collection, including guidance on working with corpora, corpus searches, data cleaning, and data interpretation, as well as research design in line with these two approaches.

Chapter 5 of Discourse Syntax (Special Endings) deals with two constructions that place sentence elements in the final, end-focus position. Discussing the extraposition of subject clauses (it-extraposition) and the cleft construction (it-clefting), the chapter shows that both constructions serve the distribution of given before new information in the sentence and the placement of complex material at the end of the sentence (Principle of End-Weight). It also shows that alternative constructions (non-extraposition) as well as discourse types and registers play a role in how these non-canonical constructions are used and that there are differences between speech and writing as well as other discourse types and modes. The chapter also discusses the presentation and visualization of quantitative corpus-linguistic evidence and presents strategies for dealing with absolute, normalized, and proportional frequencies gained from natural language corpora.

Morphosyntax describes the form and function of grammatical constructions in the world’s languages. The form of constructions includes both syntactic structure and relevant morphology. The function of constructions includes both information content (semantics) and information packaging of the content. The same semantic content can be packaged in different ways. The approach in this textbook is crosslinguistic and empirical: we compare grammatical constructions across languages and describe patterns of variation, universals constraining variation, and diachronic processes that give rise to the variation. Crosslinguistic comparison is done using crosslinguistically valid concepts (comparative concepts). Crosslinguistic constructions are defined as all grammatical forms expressing a particular function. Strategies are crosslinguistically defined formal means for expressing a function. The analysis of grammatical structure in a particular language is the categorization of constructions in the language by their form and their function. Language-particular analysis of constructions and crosslinguistic analysis of constructions can be united via the function of the construction.

Information structure concerns the relationship between sentence properties and the surrounding discourse: the acceptability of the sentences involved can depend on what has been established by the immediately preceding sentences in the text or conversation. The non-canonical constructions described are passive clauses, extraposition, the existential construction, the ‘it’-cleft construction, pseudo-clefts, dislocation, pre- and post-posing, and reduction. These information-packaging constructions generally have a counterpart which is syntactically more elementary or basic, and although they typically have the same core (logical) meaning as their basic counterpart, they package and present the information of the sentence differently. Our major concern in this chapter will be to describe the syntactic differences between these constructions and their basic counterparts and to investigate the factors which favour or disfavour the use of one of these constructions rather than the more basic counterpart.