I still do no understand why some verbs take the past tense. It is frustrating! Can someone please explain to me why these verbs take the past tense: Example 1: She will be allowed to participate in commencement. IF the sentence is structured as future tense with will, why is it allowed and not allow? Example 2: Water is pumped out of the caisson to create an underwater work chamber. The word is=simple present. Why is it pumped and not pump? Example 3: Verbs used as adjective---Filtered products. Why are some verbs used as adjectives or adverbs take the past tense and not the basic verb form? Why is it filtered not filter?
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