* Simple Present
* Simple Past
Let's break down why:
* Simple Present: This tense describes actions happening now or habitual actions. It uses the base form of the verb for all subjects except the third person singular (which adds "-s"). For example:
* I walk.
* She walks.
* They eat.
* Simple Past: This tense describes actions that happened in the past. It uses the past tense form of the verb. For example:
* I walked.
* She walked.
* They ate.
All other tenses require auxiliary verbs (like "have", "be", "will", etc.) to form their structure.