Question

review the skill
underline each infinitive and place parentheses around each infinitive phrase.
then identify its function as noun (noun), adjective (adj), or adverb (adv).

1. signaling is a good way to communicate over a distance.
2. different signal methods are used around the world to transmit critical

information.

1. to send a signal may require the use of an electrical impulse or a visual

or sound indicator.

1. one purpose of electrical signals is to communicate, as through the

telephone.

Explanation:

• In sentence 1, “to communicate over a distance” modifies “way” (tells what kind of way), so it's an adjective.
• In sentence 2, “to transmit critical information” tells why different signal methods are used (modifies the verb “are used”), so it's an adverb.
• In sentence 3, “to send a signal” is the subject of the sentence (what may require...), so it's a noun.
• In sentence 4, “to communicate” is the complement of the verb “is” (tells what the purpose is), so it's a noun.

Answer:

1. Underline: to communicate; (to communicate over a distance); Function: Adj
2. Underline: to transmit; (to transmit critical information); Function: Adv
3. Underline: to send; (to send a signal); Function: Noun
4. Underline: to communicate; (to communicate); Function: Noun