In
linguistic typology, word order is the order in which words appear in sentences. In many languages, changes in word order occur due to topicalization or in questions. However, most languages are generally assumed to have a basic word order, called the
unmarked word order; other, marked word orders can then be used to emphasize a sentence element, to indicate
modality (such as an
interrogative modality), or for other purposes. For example,
English is SVO (
subject-
verb-
object), as in "I don't know this", but OSV is also possible: "This I don't know." This process is called
topic-fronting (or topicalization) and is very common. In English, OSV is a marked word order because it emphasises the object.
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