tenseAffirmative/Negative/QuestionUseSignal Words Simple Present A: He speaks.N: He does not speak.Q: Does he speak? action in the present taking place once, never or several times facts actions taking place one after another action set by a timetable or schedule always, every …, never, normally, often, seldom, sometimes, usuallyif sentences type I (If Italk, …) Present Progressive A: He is speaking.N: He is not speaking.Q: Is he speaking? action taking place in the moment of speaking action taking place only for a limited period of time action arranged for the future at the moment, just, just now, Listen!, Look!, now, right…