Final answer:
The English exercises require a grasp of comma rules, verb tenses, phrase identification, and differentiation between commonly confused words. These skills contribute to crafting grammatically sound sentences and avoiding frequent errors.
Step-by-step explanation:
The exercise provided seems to focus on various aspects of English grammar and usage, including comma placement, verb conjugation, and identifying grammatical phrases such as infinitive, prepositional, and gerund phrases. For students to successfully complete these exercises, they will need to have an understanding of grammatical rules surrounding punctuation, verb tense consistency, and the roles different phrases play within a sentence.
Comma usage can be particularly tricky and requires an awareness of when clauses are independent or dependent and how additional information is being added to a sentence. Similarly, selecting the correct verb form depends on the temporal context of the sentence, and whether the action is ongoing, completed, or about to happen. Phrases like infinitive and gerund phrases serve to add meaning to the verbs or function as other parts of speech within the sentence.
It is also important for students to differentiate between commonly confused words like 'hear' and 'here,' or 'affect' and 'effect,' as well as choosing the appropriate verb tense in commands and requests. Exercises that focus on these distinctions help students enhance their writing and avoid common mistakes.