Verb forms can be complex as verbs can function as main verbs or helping verbs, leading to reductions and emphasizing the main action. Recognizing verb functions by wearing a 'grammar hat' is crucial to understanding verb reductions. For instance, in 'The dogs have been eaten fast,' 'have been' are helping verbs for 'eaten,' showing the verb forms 'present perfect continuous.' This complexity extends to deeper layers with examples like 'The dogs could have been eaten fast,' where 'have been' are further emphasized. Additionally, verb endings and noun endings in sentences can link to function words, enhancing understanding.