Final answer:
The predicate of the provided sentence is "beat my coach in a tennis match." The subject is 'I', and the verb form 'beat' is the main verb of the predicate.
Step-by-step explanation:
The predicate of the sentence "After practicing all week, I beat my coach in a tennis match" is "beat my coach in a tennis match." In this sentence, the subject is 'I' and the main verb, which is also the simplest form of the predicate, is 'beat'. The predicate provides information about what the subject is doing and may include verb forms, objects, and other elements or modifiers. It's essential to choose the most effective verb forms to convey the right tense and action in a sentence. Events can happen at different times, and depending on whether the text is written in present or past tense, the verb forms will differ, sometimes leading to a mixture of tenses within a single text. When practicing sentence structures, the understanding of predicates, subjects, and verb forms enhances clarity in writing.