sits is the verb.
sits
Simple Predicate: sits
"in the shed" is the prepositional phrase in the sentence.
sits
Shedding is the present participle of the verb shed.
No.Went back is a phrasal verb it is the past form of go back.
The nouns are ride, Boston, and night. The phrase "back to Boston" is an adjective phrase. The phrase "last night" would be an adverb if used with a verb other than a linking verb.
The phrase "is not" is a verb phrase using the verb (is) and the adverb (not).
The verb phrase in the sentence is "are the cripple on the corner."
"Is should be" is not a correct verb phrase in English grammar. "Is" is a linking verb and "should be" is a modal verb phrase. A correct verb phrase would be "is eating" or "is sleeping."
A shed can be a noun (a small building used for storage or shelter) or a verb (to get rid of something or discard).