Let's understand what a regular verb is. In English grammar, verbs are categorized as either regular or irregular based on how they form their past tense and past participle.

Regular verbs follow a consistent pattern. To form the past tense and past participle, we simply add "$\mathrm{-ed}$" to the base form of the verb.

Example:

Base Verb: $\mathrm{walk}$

Past Tense: $\mathrm{walked}$

Past Participle: $\mathrm{walked}$

Irregular verbs, on the other hand, do not follow this rule. Their past tense and past participle forms change in unpredictable ways and must be memorized.

Example:

Base Verb: $\mathrm{come}$

Past Tense: $\mathrm{came}$ (not "comed")

Past Participle: $\mathrm{come}$

Now, let's analyze the options:

Step 1: Look at the base form of each verb. The base form is the simplest form of the verb, as you would find it in the dictionary (e.g., to walk, to come).

Step 2: Check if its past tense is formed by adding "-ed".

• Walk: Base form is "walk". Its past tense is "walked" (walk + ed). This follows the rule perfectly. It is a regular verb.
• Come: Base form is "come". Its past tense is "came", not "comed". This does not follow the rule. It is an irregular verb.
• Came: This is already the past tense form of the irregular verb "come". It is not a base verb.
• Coming: This is the present participle form (-ing form) of the verb "come". It is not a base verb.

Final Answer: Therefore, the regular verb from the list is Walk.

Related Topic: Verb Forms

Most English verbs have five forms: the base form, the -s form (for third person singular present tense), the past tense, the past participle, and the present participle (-ing form). The key to identifying a regular verb is to see if its past tense and past participle are created by adding "-ed" to the base.

Key Formulae/Rules

Rule for Regular Verbs:

Past Tense = Base Verb + $\mathrm{-ed}$

Past Participle = Base Verb + $\mathrm{-ed}$

There are minor spelling rules for adding "-ed", such as doubling a final consonant (stop → stopped) or changing a final 'y' to 'i' (try → tried), but the core principle of adding "-ed" remains.