entence that includes both subject and predicative subordinate clauses: its proper segment, i. e. the word-string standing apart from the subordinate clauses is usually reduced to a sheer finite link-verb. Cf.: How he managed to pull through is what baffles me. (The principal clause representation: "- is -")
A question arises whether the treatment of the subject and predicative clauses as genuinely subordinate ones is rational at all. Indeed, how can the principal clause be looked upon as syntactically (positionally) dominating such clauses as perform the functions of its main syntactic parts, in particular, that of the subject? How can the link-verb, itself just a little more than an auxiliary element, be taken as the "governing predicative construction" of a complex sentence? p align="justify"> However, this seeming paradox is to be definitely settled on the principles of paradigmatic theory. Namely, to understand the status of the "deficiently incomplete and gaping" principal clause we must take into consideration the matrix nature of the principal clause in the sentence: the matrix presents the upper-level positional scheme which is to be completed by predicative constructions on the lower level.
In case of such clauses as subject and predicative, these are all the same subordinated to the matrix by way of being its embedded elements, i. e. the fillers of the open clausal positions introduced by it. Since, on the other hand, the proper segment of the principal clause, i. e. its "nucleus", is predicatively deficient, the whole of the clause should be looked upon as merged with the corresponding filler-subordinate clauses. Thus, among the principal clauses there should be distinguished merger principal clauses and non-merger principal clauses, the former characterising complex sentences with clausal deployment of their main parts, the latter characterising complex sentences with clausal deployment of their secondary parts. p align="justify"> The principal clause dominates the subordinate clause positionally, but it doesn't mean that by its syntactic status it must express the central informative part of the communication. The information perspective in the simple sentence does not repeat the division of its constituents into primary and secondary, and likewise the information perspective of the complex sentence is not bound to duplicate the division of its clauses into principal and subordinate. The actual division of any construction, be it simple or otherwise, is effected in the context, so it is as part of a continual text that the complex sentence makes its clauses into rheme-rendering and theme-rendering on the complex-sentence information level .
When we discussed the problem of the actual division of the sentence, we pointed out that in a neutral context the rhematic part of the sentence tends to be placed somewhere near the end of it (see Ch. XXII , В§ 4). This holds true both for the simple and complex sentences, so that the order of clauses plays an important role in distributing primary and secondary information among them. Cf.: The boy was friendly with me because I allowed him to keep the fishing line. p align="justify"> In this sentence approached as part of stylistically neutral text the principal clause placed in the front position evidently expresses the starting point of the information delivered, while the subordinate clause of cause renders the main sentential idea, namely, the speaker's explanation of the boy's attitude. The "contraposition" presupposed by the actual division of the whole sentence is then like this: "Otherwise the boy wouldn't have been friendly". Should the clause-order of the utterance be reversed, the informative roles of the clauses will be re-shaped accordingly: As I allowed the boy to keep the fishing line, he was friendly with me. p align="justify"> Of course, the clause-order, the same as word-order in general, is not the only means of indicating the correlative informative value of clauses in complex sentences; intonation plays here also a crucial role, and it goes together with various lexical and constructional rheme-forming elements, such as emphatic particles, constructions of meaningful antithesis, patterns of logical accents of different kinds.
Speaking of the information status of the principal clause, it should be noted that even in unemphatic speech this predicative unit is often reduced to a sheer introducer of the subordinate clause, the latter expressing practically all the essential information envisaged by the communicative purpose of the whole of the sentence. Cf.: p align="justify"> You see that mine is by far the most miserable lot. Just fancy that James has proposed to Mary! You know, kind sir, that I am bound to fasting and abstinence. p align="justify"> The principal clause-introducer in sentences ...
