This document summarizes the key English verb tenses including: simple present, present continuous, simple past, past continuous, present perfect, present perfect continuous, past perfect, past perfect continuous, future I simple, future I continuous, future II simple, future II continuous, conditional I simple, conditional I continuous, conditional II simple, and conditional II continuous. For each tense, it provides the affirmative, negative, and interrogative forms as well as common uses to indicate time frames or emphasis on actions.

1. English Tenses Grammar