Final answer:
Adverbs act as grammatical road signs to show relationships between words when they function as adverbs.
Step-by-step explanation:
When words work simply as grammatical road signs to show relationships adverb words (grammatical function), they are unstressed. Adverbs act as modifiers of verbs, describing their time, place, reason, or manner. Like adjectives, adverbs can be qualified (very, quite). Many (but not all) adverbs end with -ly (slowly, apparently, strangely).
Example 1 - Pierre quickly ran through the main points of his argument. The adverb "quickly" is modifying the verb "ran." Example 2 - She threw down the gauntlet quite suddenly. The adverb "suddenly” is being qualified by the word "quite." This adverb phrase modifies the verb "threw."