s own problems of analysis. On the other hand, it must be pointed out that all the types of these clauses are inter-related both semantically and paradigmatically, which may easily be shown by the corresponding transformations and correlations. Some of such correlations have been shown on the examples above. Compare also:
He opened the window wide that he might hear the conversation below. (Purpose)? Unless he wanted to hear the conversation below he wouldn't open the window. (Condition)? As he wanted to hear the conversation below, he opened the window wide and listened. (Cause)? Though he couldn't hear properly the conversation below, he opened the window and listened. (Concession)? The voices were so low that he couldn't hear the conversation through the open window. (Consequence)? If he hadn't opened the window wide he couldn't have heard the conversation. (Condition)
Certain clausal types of circumstance are closely related to non-circumstantial clausal types. In particular, this kind of connection is observed between conditional clauses and time clauses and finds its specifically English expression in the rise of the contaminated if-and when-clauses: If and when the discussion of the issue is renewed, both parties will greatly benefit by it.
Another important variety of clauses of mixed syntactic semantics is formed by concessive clauses introduced by the connectors ending in-ever. E.g.:
Whoever calls, I'm not at home. However tempting the offer might be, Jim is not in a position to accept it. p align="justify"> Clauses of mixed adverbial semantics present an interesting field of paradigmatic study.
The fourth group of adverbial clauses is formed by parenthetical or insertive constructions. Parenthetical clauses, as has been stated elsewhere, are joined to the principal clause on a looser basis than the other adverbial clauses; still, they do form with the principal clause a syntactic sentential unity, which is easily proved by the procedure of diagnostic elimination. Cf.: p align="justify"> Jack has called here twice this morning, if I am not mistaken. ? (*) Jack has called here twice this morning. p align="justify"> As is seen from the example, the elimination of the parenthesis changes the meaning of the whole sentence from problematic to assertive: the original sense of the utterance is lost, and this shows that the parenthesis, though inserted in the construction by a loose connection, still forms an integral part of it.
As to the subordinative quality of the connection, it is expressed by the type of the connector used. In other words, parenthetical predicative insertions can be either subordinative or coordinative, which is determined by the contextual content of the utterance and exposed by the connective introducer of the clause. Cf. a coordinate parenthetical clause: Jim said, and I quite agree with him, that it would be in vain to appeal to the common sense of the organisers.
Cf. the subordinate correlative of the cited clause: Jim said, though I don't quite agree with him, that it would be in vain to appeal to the common sense of the organisers.
Parenthetical clauses distinguish two semantic subtypes. Clauses of the first subtype, illustrated by the first example in this paragraph, are "introductory", they express different modal meanings. Clauses of the second subtype, illustrated by the latter example, are "deviational", they express commenting insertions of various semantic character. Deviational parenthesis marks the loosest possible syntactic connection of clauses combined into a composite sentence. p align="justify"> В§ 9. Clauses in a complex sentence may be connected with one another more closely and less closely, similar to the parts of a simple sentence. The intensity of connection between the clauses directly reflects the degree of their proposemic self-dependence and is therefore an essential characteristic of the complex sentence as a whole. For instance, a predicative clause or a direct object clause are connected with the principal clause so closely that the latter cannot exist without them as a complete syntactic unit. Thus, this kind of clausal connection is obligatory. Cf.: p align="justify"> The matter is, we haven't received all the necessary instructions yet. ? (*) The matter is - I don't know what Mike is going to do about his damaged bike. ? (*) I don't know - As different from this, an ordinary adverbial clause is connected with the principal clause on a looser basis, it can be deleted without destroying the principal clause as an autonomous unit of information. This kind of clausal connection is optional. Cf.: p align="justify"> The girl gazed at him as though she was struck by something e...
