Analysis : The word announcement is a noun because it names a thing (a message). It is preceded by the definite article the, which typically modifies nouns. It also functions as the object of the verb hears, showing it is a noun phrase.

Analysis : The word began is a verb because it shows an action. Its past-tense form (-an ending from begin → began) indicates a completed action.

Analysis : The word sunny is an adjective because it describes the noun day. It has the adjective-forming suffix -y and occurs before a noun within a noun phrase (sunny spring day), which is typical of adjectives.

Analysis : The word impatiently is an adverb because it modifies the verb looks, describing how he looks. It ends with the common adverb-forming suffix -ly and functions to give manner to the action.

Analysis : The word over is a preposition because it shows the relationship between view and city. It introduces the prepositional phrase over the city, which functions as part of the predicate.

Analysis : The word and is a coordinating conjunction because it links two independent clauses (There are too many people + he is always nervous). Its function is to join equal grammatical structures.