No, the sentence does not contain (or form) a gerund phrase.
A gerund is a verb in -ing form acting as a noun.
Gerunds can be subjects, objects, or objects of prepositions.
Examples of gerunds and gerund phrases as subjects:
Eating is fun. (gerund)
Eating spinach is good for you. (gerund phrase)
Eating while driving can be dangerous. (gerund phrase)
Your example above is the verb -ing form used as an adjective. (Laughing describes boy.)
Therefore, it is a participial adjective, not a gerund.
This would be the phrase "climbing trees." It is because this phrase works in the sentence to be the direct object.
There is no gerund phrase in that example.
The first part of the sentence, "winning the race", is a gerund phrase, and "winning" is the gerund. "Winning the race demanded speed and endurance" is an entire sentence, because it contains a subject (the gerund phrase) and a verb (demanded).
'Floating' is the gerund. Therefore the gerund phrase is 'Floating down the river on a raft'.
prepositional phrase
It functions as a subject of the sentence.
No, the verb "laughing" is not being used as a noun, it's an adjective.
A gerund begins with a verb and a -ing after the verb.A gerund phrase is a phrase that includes the gerund and the rest of the sentence.
A gerund phrase
Singing in the rain.
A gerund phrase is not considered a sentence. See below: waiting for the bus (a gerund phrase, not a complete sentence) While waiting for the bus, I like to listen to music. (complete sentence)
The gerund is "Driving" and the gerund phrase is "Driving carelessly".
This would be the phrase "climbing trees." It is because this phrase works in the sentence to be the direct object.
In that sentence, "crying" functions as a noun.
for joggingThe gerund is jogging, in the prepositional phrase "for jogging." The gerund is a noun here.
There is no gerund phrase in that example.
The first part of the sentence, "winning the race", is a gerund phrase, and "winning" is the gerund. "Winning the race demanded speed and endurance" is an entire sentence, because it contains a subject (the gerund phrase) and a verb (demanded).