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重新分析
同一串形式被后来的说话人分析出新的结构。
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How do languages say “there is”?
“The water is in the river” takes the water as given and tells you where it is. “There is water in the river” reverses that: the river is the setting and the water is the news. Saying that something exists therefore reuses the machinery for saying where it is, and languages differ in how much they change along the way — some leave the locational predicate untouched, some add a placeholder subject, some borrow the possessive verb, and some keep a predicate for existence alone. The choice often splits by animacy and by number.
How does negation rebuild itself over time?
A preverbal negator weakens and is reinforced by an extra element, often a minimizer like “step” or “thing”. The reinforcer is reanalysed as the negator itself, then weakens in turn, and the cycle starts again.
How does a word for “there is no” turn into plain “not”?
A dedicated negative existential (“there is no X”) arises beside the ordinary negator, then spreads from existential sentences into verbal negation until it becomes the standard negator itself. Croft distinguishes six synchronic types — A, A~B, B, B~C, C, C~A — and the languages below sit at different points along the drift.