Generally speaking , temperatures are higher in the month of July than in October. The first phrase modifies the whole idea expressed in the sentence. Thus, it is a sentence modifier.
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Generally speaking, temperatures are higher in the month of July than in October.
The first phrase modifies the whole idea expressed in the sentence. Thus, it is a sentence modifier.
It is a free (as opposed to a bound) modifier because we can put it at different places in the sentence without changing the meaning.
Temperatur
Jigneshbharati Generally, a phrase or clause that modifies either the main clause or another free modifier.
https://www.thoughtco.com/free-modifier-grammar-1690807