Were you able to give words or phrases associated to grammatical signals? Among the words and phrases, which do you think best defines grammatical signals?
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Transitions (or signal words) are words and phrases that show the connection between ideas. ... Common signal words show emphasis, addition, comparison or contrast, illustration, and cause and effect.

huck's relationship with food is a prominent theme throughout the novel, and during his time on jackson's island and working his way down river, huck revels in and enjoys his ad hoc dining. in the first chapter, we observe huck is ironically trapped in a "civilized" world, when he would prefer to live freely in nature.