EX) Put your jar anywhere you want in my house
EX) You may go anywhere you like
'Anywhere' is an adverb (part of speech)
But, it works as if it were a conjunction in the example (Anywhere + Subject + Verb)
I want to know how I should understand it
In modern grammar, "anywhere" is analysed as a compound determinative consisting of the determinative "any" + the locative nominal base "where". Your examples are fused relative constructions in which "anywhere" combines, or fuses, the antecedent and the relativised element. The meanings are comparable to the non-fused: Put your jar in any [place that you want in my house ].
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In modern grammar, "anywhere" is analysed as a compound determinative consisting of the determinative "any" + the locative nominal base "where".
Your examples are fused relative constructions in which "anywhere" combines, or fuses, the antecedent and the relativised element.
The meanings are comparable to the non-fused:
Put your jar in any [place that you want in