"The cat" is the subject of the sentence.

"Dances gracefully" is the predicate of the sentence.

"The dog barked" is a simple sentence with one independent clause.

This sentence contains both independent and dependent clauses, making it compound-complex.

"And" is the conjunction connecting two subjects in a compound sentence.

"A new car" is the direct object of the verb "bought."

"But" is the coordinating conjunction connecting two contrasting ideas.

"The cat is black." follows the standard subject-verb-object sentence structure.

"After finishing his homework" is the dependent clause.

"Him" is the indirect object in the sentence.

"Although" is the subordinating conjunction introducing a dependent clause.

"Although it's cold, the sky is clear." is a compound sentence with two independent clauses.

"John" is the antecedent of the pronoun "he."

"On the windowsill" is the prepositional phrase.

This sentence is complex, containing one independent clause and one dependent clause.

"Quickly" is the adverbial phrase modifying the verb "ran."

"Wow" is the interjection expressing surprise or excitement.

"Walking in the park, the flowers bloomed." follows a correct sentence structure.

"Who studied the hardest" is the relative clause modifying "The student."

"Doctor" is the predicate nominative renaming the subject "She."

"Either...or" is a pair of correlative conjunctions.

"The cat sat on the mat." follows a standard sentence structure.

"Who can speak multiple languages" is the adjective clause modifying "a friend."

"Swimming in the ocean" is the gerund phrase.

This sentence is complex, containing one independent clause and one dependent clause.

"Which" is the relative pronoun introducing the relative clause.

"Go to the store" is an imperative sentence.

"Clear" is the predicate adjective describing the subject "The sky."

"A talented musician" is the appositive phrase providing additional information about "My best friend."

"The ball, running in the field, was kicked." follows a correct sentence structure.

"John and Sarah" is the compound subject.

"While he was studying" is the adverbial clause indicating the timing of the phone ringing.

"The river flowed gently." follows a standard sentence structure.

This sentence is complex, containing one independent clause and one dependent clause.

"A doctor" is the appositive phrase providing additional information about "My sister."

"On the kitchen counter" is the prepositional phrase.

"Susan" is the predicate nominative renaming the subject "The winner."

"Although he is reading a book, he is still bored." is a compound sentence.

"With the fluffy tail" is the parenthetical element providing additional information about "My cat."

"Swimming with dolphins" is the gerund phrase.

"But" is the coordinating conjunction connecting two independent clauses.

"She happily accepted the award." follows a correct sentence structure.

"Which" is the relative pronoun introducing the relative clause.

"Either...or" is a pair of correlative conjunctions.

"To visit her grandparents" is the infinitive phrase.

"They excitedly opened the gift." follows a correct sentence structure.

"He laughed and danced" is the compound predicate.

"On the shelf" is the prepositional phrase.

"Who won the race" is the adjective clause modifying "The girl."

"Go to the store" is an imperative sentence.

This sentence is complex, containing one independent clause and one dependent clause.

"With the wagging tail" is the participial phrase.

"Exciting" is the predicate adjective describing the subject "The movie."

"The rain poured outside the window." follows a correct sentence structure.

"The children" is the antecedent of the pronoun "they."

"Before the storm arrived" is the adverbial clause indicating the timing of securing the windows.

"Although the sun is shining, the flowers bloomed." is a compound sentence.

"Beautifully" is the adverbial phrase modifying the verb "sings."

"Neither...nor" is a pair of correlative conjunctions.

"The cat and the dog" is the compound subject.