Verb inflection refers to the changes made to a verb to express different grammatical categories such as tense, mood, voice, aspect, person, and number. For example, the verb to walk can be inflected to form walks, walked, or walking, indicating present, past, or continuous actions, respectively. These changes help convey when an action occurs and who is performing it. In English, verb inflection is often achieved by adding suffixes or modifying the verb's form. Understanding verb inflection is essential for constructing grammatically correct sentences and effectively communicating ideas.