This document discusses the connection between English tenses and adverbs of time. It explains that certain adverbs of time, like "yesterday" or "last week", require the past tense, while other adverbs like "now" or "already" require other tenses. Understanding this tight connection between tenses and time adverbs is the key to correctly using English tenses. It provides examples of sentences using different tenses and adverbs of time, and recommends that language learners practice identifying the adverbs of time that dictate the necessary tense.