Classification of Sentences

2. Classification of Sentences

The problem of classification of sentences is a highly complicated one, and we will first consider the question of the principles of classification, and of the notions on which it can be based.

Let us begin by comparing a few sentences differing from each other in some respect. Take, for example, the following two sentences:

(1) But why did you leave England? (GALSWORTHY)

(2) There is to-day more people writing extremely well, in all departments of life, than ever before; what we have to do is to sharpen our judgement and pick these out from the still larger number who write extremely badly. (CRUMP)

Everyone will see that the two sentences are basically different. This is true, but very general and not grammatically exact. In order to arrive at a strictly grammatical statement of the difference (or differences) between them we must apply more exact methods of observation and analysis.

Let us, then, proceed to a careful observation of the features which constitute the difference between the two sentences.

1. The first sentence expresses a question that is the speaker expects an answer which will supply the information he wants. The second sentence expresses a statement, that is, the author (or speaker) states his opinion on a certain subject. He does not ask about anything, or expect anybody to supply him any information. This difference is expressed in writing by the first sentence having a question mark at the end, while the second sentence has a full stop.

2. The first sentence is addressed to a certain hearer (or a few hearers present), and is meant to provoke the hearer's reaction (answer). The second sentence is not addressed to any particular person or persons and the author does not know how anybody will react to it.

3. The two sentences differ greatly in length: the first consists of only 6 words, while the second has 39.

4. The first sentence has no punctuation marks within it, while the second has two commas and a semicolon.

5. The first sentence has only one finite verb (did… leave), while the second has three (are, have, write).

These would seem to be some essential points of difference. We have riot yet found out which of them are really relevant from a grammatical viewpoint. We have not included in the above list those which are quite obviously irrelevant from that viewpoint; for example, the first sentence contains a proper name (England), while the second does not contain any, or, the second sentence contains a possessive pronoun (our) while the first does not, etc.

Let us now consider each of the five points of difference and see which of them are relevant from a purely grammatical point of view, for a classification of sentences.

Point 1 states a difference in the types of thought expressed in the two sentences. Without going into details of logical analysis, we can merely say that a question (as in the first sentence), and a proposition (as in the second) are different types of thought, in the logical acceptation of that term. The problem now is, whether this difference is or is not of any importance from the grammatical viewpoint. In Modern English sentences expressing questions (we will call them, as is usually done, interrogative sentences) have some characteristic grammatical features. These features are, in the first place, a specific word order in most cases (predicate – subject), as against the order subject – predicate in sentences expressing, propositions (declarative sentences). Thus word order may, with some reservations, be considered as a feature distinguishing this particular type of sentence from others. Another grammatical feature characterizing interrogative sentences (again, with some reservations) is the structure of the predicate verb, namely its analytical form «do + infinitive» (in our first sentence, did, leave…, not left), where in a declarative sentence there would be the simple form (without do). However, this feature is not restricted to interrogative sentences: as is well known, it also characterizes negative sentences. Anyhow, we can (always with some reservations) assume that word order and the form «do + infinitive» are grammatical features characterizing interrogative sentences, and in so far the first item of our list appears to be grammatically relevant. We will, accordingly, accept the types «interrogative sentence» and «declarative sentence» as grammatical types of sentences.

Point 2, treating of a difference between a sentence addressed to a definite hearer (or reader) and a sentence free from such limitation, appears not to be grammatical, important as it may be from other points of view. Accordingly, we will not include this distinction among grammatical features of sentences.

Point 3, showing a difference in the length of the sentences, namely in the number of words making up each of them, does not in itself constitute a grammatical feature, though it may be more remotely connected with grammatical distinctions.

Point 4 bears a close relation to grammatical peculiarities; more especially, a semicolon would be hardly possible in certain types of sentences (so-called simple sentences). But punctuation marks within a sentence are not in themselves grammatical features: they are rather a consequence of grammatical features whose essence is to be looked for elsewhere.

Point 5, on the contrary, is very important from a grammatical viewpoint. Indeed the number of finite verbs in a sentence is one of its main grammatical features. In this particular instance it should be noted that each of the three finite verbs has its own noun or pronoun belonging to it and expressing the doer of the action denoted by the verb: are has the noun people, have the pronoun we, and write the pronoun who. These are sure signs of the sentence being composite, not simple. Thus we will adopt the distinction between simple and composite sentences as a distinction between two grammatical types.

The items we have established as a result of comparing the two sentences given earlier certainly do not exhaust all the possible grammatical features a sentence can be shown to possess. They were only meant to illustrate the method to be applied if a reasonable grammatical classification of sentences is to be achieved. If we were to take another pair or other pairs of sentences and proceed to compare them in a similar way we should arrive at some more grammatical distinctions which have to be taken into account in making up a classification. We will not give any more examples but we will take up the grammatical classification of sentences in a systematic way.

It is evident that there are two principles of classification. Applying one of them, we obtain a classification into declarative, interrogative, and imperative sentences. We can call this principle that of «types of communication».

The other classification is according to structure. Here we state two main types: simple sentences and composite sentences. We will not now go into the question of a further subdivision of composite sentences, or into the question of possible intermediate types between simple and composite ones. These questions will be treated later on (see pages 200 and 254 respectively). Meanwhile, then, we get the following results:

Types of Sentences According to Types of Communication

(1) Declarative

(2) Interrogative

(3) Imperative

Sentences belonging to the several types differ from each other in some grammatical points, too. Thus, interrogative sentences are characterized by a special word order. In interrogative sentences very few modal words are used, as the meanings of some modal words are incompatible with the meaning of an interrogative sentence. It is clear that modal words expressing full certainty, such as certainly, surely, naturally, etc., cannot appear in a sentence expressing a question. On the other hand, the modal word indeed, with its peculiar shades of meaning, is quite possible in interrogative sentences, for instance, Isn't so indeed? (SHAKESPEARE)

There are also sentences which might be termed semi-interrogative. The third sentence in the following passage belongs to this type:

«Well, I daresay that's more revealing about poor George than you. At any rate, he seems to have survived it». «Oh, you’ve seen him»? She did not particularly mark her question for an answer, but it was, after all, the pivot-point, and Bone found himself replying – that indeed he had. (BUECHNER) The sentence Oh, you’ve seen him? is half-way between the affirmative declarative sentence, You have seen him, and the interrogative sentence, Have you seen him? Let us proceed to find out the precise characteristics of the sentence in the text as against the two sentences just given for the sake of comparison. From the syntactical viewpoint, the sentence is declarative, as the mutual position of subject and predicate is, you have seen, not have you seen, which would be the interrogative order. In what way or ways does it, then, differ from a usual declarative sentence? That is where the question of the intonation comes in. Whether the question mark at the end of the sentence does or does not mean that the intonation is not that typical of a declarative sentence, is hard to tell, though it would rather seem that it does. To be certain about this a phonetic experiment should be undertaken, but in this particular case the author gives a context which itself goes some way toward settling the question. The author's words, She did not particularly mark tier question for an answer, seem to refer to the intonation with which it was pronounced: the intonation must not have been clearly interrogative, that is not clearly rising, though it must have differed from the regular falling intonation to some extent: if it had not been at all different, the sentence could not have been termed a «question», and the author does call it a question. Reacting to this semi-interrogative intonation, Bone (the man to whom the question was addressed) answered in the affirmative. It seems the best way, on the whole, to term such sentences semi-interrogative. Their purpose of course is to utter a somewhat hesitating statement and to expect the other person to confirm it.

Imperative sentences also show marked peculiarities in the use of modal words. It is quite evident, for example, that modal words expressing possibility, such as perhaps, maybe, possibly, are incompatible with the notion of order or request. Indeed, modal words are hardly used at all in imperative sentences.

The notion of exclamatory sentences and their relation to the three established types of declarative, interrogative, and imperative sentences presents some difficulty. It would seem that the best way to deal with it is this. On the one hand, every sentence, whether narrative, interrogative, or imperative, may be exclamatory at the same time, that is, it may convey the speaker's feelings and be characterized by emphatic intonation and by an exclamation mark in writing. This may be seen in the following examples: But he can't do anything to you! (R. WEST) What can he possibly do to you! (Idem) Scarlett, spare me! (M. MITCHELL)

On the other hand, a sentence may be purely exclamatory, that is, it may not belong to any of the three types classed above. This would be the case in the following examples: «Well, fiddle-dee-dee!» said Scarlett. (M. MITCHELL) Oh, for God's sake, Henry! (Idem)

However, it would perhaps be better to use different terms for sentences which are purely exclamatory, and thus constitute a special type, and those which add an emotional element to their basic quality, which is either declarative, or interrogative, or imperative. If this view is endorsed, we should have our classification of sentences according to type of communication thus modified:

(1) Declarative (including emotional ones)

(2) Interrogative (including emotional ones)

(3) Imperative (including emotional ones)

(4) Exclamatory

This view would avoid the awkward contradiction of exclamatory sentences constituting a special type and belonging to the first three types at the same time.

Types of Sentences According to Structure

(1) Simple

(2) Composite

The relations between the two classifications should now be considered.

It is plain that a simple sentence can be either declarative, or interrogative, or imperative. But things are somewhat more complicated with reference to composite sentences. If both (or all) clauses making up a composite sentence are declarative, the composite sentence as a whole is of course declarative too. And so it is bound to be in every case when both (or all) clauses making a composite sentence belong to the same type of communication (that is the case in an overwhelming majority of examples). Sometimes, however, composite sentences are found which consist of clauses belonging to different types of communication. Here it will sometimes he impossible to say to what type of communication the composite sentence as a whole belongs. We will take up this question when we come to the composite sentence.

Some other questions connected with the mutual relation of the two classifications will be considered as we proceed.