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The first of these sentences is a basic zero conditional with both clauses in the present tense. The fourth is an example of the use of will in a condition clause [4] (for more such cases, see below). The use of verb tenses, moods and aspects in the parts of such sentences follows general principles, as described in Uses of English verb forms.
Logical consequence is necessary and formal, by way of examples that explain with formal proof and models of interpretation. [1] A sentence is said to be a logical consequence of a set of sentences, for a given language , if and only if , using only logic (i.e., without regard to any personal interpretations of the sentences) the sentence must ...
A conditional sentence expressing an implication (also called a factual conditional sentence) essentially states that if one fact holds, then so does another. (If the sentence is not a declarative sentence, then the consequence may be expressed as an order or a question rather than a statement.)
Example 1. One way to demonstrate the invalidity of this argument form is with a counterexample with true premises but an obviously false conclusion. For example: If someone lives in San Diego, then they live in California. Joe lives in California. Therefore, Joe lives in San Diego. There are many places to live in California other than San Diego.
For example: 'I would sit': ül (sit) + ne + k (referring to the person I) = ülnék. (In Hungarian, when a word ends with a vowel, and a suffix or a marker or an affix is added to its end, the vowel becomes long.) When making an if-sentence, the conditional mood is used in both apodosis and the protasis: Elmennék Olaszországba, ha lenne ...
Example 4 If the U.S. Congress passes a bill, the president's signing of the bill is sufficient to make it law. Note that the case whereby the president did not sign the bill, e.g. through exercising a presidential veto, does not mean that the bill has not become a law (for example, it could still have become a law through a congressional ...
In general, logical consequence in first-order logic is only semidecidable: if a sentence A logically implies a sentence B then this can be discovered (for example, by searching for a proof until one is found, using some effective, sound, complete proof system). However, if A does not logically imply B, this does not mean that A logically ...
There is no convincing evidence that Churchill said this, and good reason to believe that he did not.) [19] [20] The sentence "does not demonstrate the absurdity of using [prepositional phrase] fronting instead of stranding; it merely illustrates the ungrammaticality resulting from fronting something that is not a constituent". [21] [22]