110. When we speak and when we write, we put our words together into sentences of one kind or another.
If we use only single words out of context, such as
| leads, like, are, birds, rapids, trail, |
we do not really say anything; and if anybody speaks them, we can only wonder, Who leads? Who likes? What are? What about birds, rapids, trail, etc.?
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110a. A little thought will convince the reader that we cannot claim that the utterance of one particular word in isolation from other words is not saying anything.
It is usually the context of the utterance that makes it clear what the speaker intends.
The examples in § 110 refer only to the random stringing of words together in such a way as to make it difficult, if not impossible, to gather any coherent meaning from them.
As mentioned above in § 109a, it is certainly possible to address someone or respond to many kinds of questions with the utterance of just a single word.
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111. The same is true of every group of words that is not a sentence when out of context, even though the words may be arranged so as to have some meaning.
For example:
| the clouds. | | like sailing very much. |
| under the tree. | | looks green. |
| school of fish. | | leads to the lake. |
| through the canyon. | | to the rapids. |
| green with leaves. | | has brought. |
If we read these expressions backwards, they would have no meaning at all;
as they are, they might form parts of sentences.
But when out of context they are not sentences, and they do not give any information, for they do not form statements, questions, or commands.
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111a. Nevertheless, it is always possible to devise a context for sentence fragments; someone may well give us information in the form given in § 111 if we ask felicitously such questions as:
| What are those white things in the sky? | | What did you say you do? |
| Where shall we sit? | | What color would you say? |
| What do you call a collection of those animals? | | What does this trail do? |
| Where do these tracks lead? | | Where are you going in that canoe? |
| How do those trees look in spring? | | Would you say, is brought or has brought? |
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112. We have seen that every sentence either asserts or asks or orders.
Hence, we say that
There are three kinds of sentences.
We call them declarative, interrogative, and imperative.
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113. A Declarative Sentence states a fact or an opinion.1
| As: You speak correctly. You will learn to speak correctly. |
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114. An Interrogative Sentence asks a question.2
| As: Do you speak correctly? Will you learn to speak correctly? |
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115. An Imperative Sentence gives a command, makes a request, or expresses a wish.2
| As: Speak correctly. Please teach me to speak correctly. |
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115a. It is neverthless possible to allow certain sentences having the approximate outward form of the declarative sentence to serve as an interrogative or imperative sentence.
It is easy to give a declarative sentence the force of an interrogative sentence by applying the typical intonational contour of an interrogative sentence to it.
| As: Youre going to the woods today? The wildfire has shut down the freeway? |
Similarly, we might supply the imperative sentence with the second person you subject as a vocative of address and thereby conform it approximately to the outward shape of a declarative sentence (except for the comma and its intonation):
| As: You, sit down immediately! |
Consider, further three ways to request certain behavior to avoid the imperative sentence, Please, shut the window:
| 1) | DECLARATIVE: | It is terribly cold here. |
| 2) | YN-INTERROGATIVE: | Would you please shut the window? |
| 3) | Wh-INTERROGATIVE: | How cold must it be here (before you shut the window)? |
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117. Exclamations like
| How many colors there are in the sunset! |
| What a long trip it is to the moon! |
seem to form a new class.
But they are actually better thought of as shortened forms of command sentences,
See how many colors there are in the sunset! Just think what a long trip it is to the moon!
Exclamations of this kind always begin with how or what.
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118. Punctuation.
The following rules show us how to begin and end our written sentences:
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119. Every sentence must begin with a capital letter.
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120. A declarative or an imperative sentence must end with a period [.].
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121. An interrogative sentence must end with a question mark [?].
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122. But a sentence of any sort that is also exclamatory, should end with an exclamation point [!].
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