Final answer:
The correct form of the sentence is "Our summer trip to England was interesting." The subject is "Our summer trip to England," and the predicate is "was interesting," with 'was' being the intransitive verb and 'interesting' functioning as the adverbial component.
Step-by-step explanation:
The sentence "Our summer trip to England was interesting?" is a declarative sentence that ends with a question mark by mistake. To correct it, the question mark should be replaced with a period since the sentence is stating a fact about the summer trip, not asking a question. Therefore, the correctly retyped sentence is "Our summer trip to England was interesting."
In English grammar, every sentence contains a subject that tells us what the sentence is about, and a predicate that tells us something about the subject. In the given sentence, "Our summer trip to England" is the subject, and "was interesting" is the predicate which includes the intransitive verb 'was' and the adjective 'interesting' as the adverbial component.