Instruction
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So, regular actions. They can be held in any of the three times. Let's take the verb "to write".
Present Simple: He writes. Since it is a regular action, it is possible to expand the offer: He writes every day. In English this sentence means “He writes”. Common question: “Does he write?”. Special question: “What does he write?”; “Who writes?”.
Past Simple (past tense): “He wrote” (He wrote yesterday). Questions: “Did he write?”, “What did he write, Who wrote it?” etc.
Future tense (Future Simple): “He will write” (He writes). Questions: “Will he write?”, “What will he write?”, “Who will write?”.
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The time of Continuous indicate actions happening at the moment. “He is writing,” He says now. Questions: “Is he writing?”, “What is he writing?”, “Who is writing?”, “Is he writing or reading?”, “He is writing, isn't he?” etc.
Past Continuous: He wrote yesterday at 3 – “He was writing at 3”. Questions: “Was he writing?”, “What was he writing?”, “Who was writing?” etc.
Future Continuous: He will write tomorrow 3 – “He will be writing at 3”. You can ask questions like, “Will he be writing?”, “What will he be writing?”, “Who will be writing?”
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Perfect tenses indicate completed by a specific moment of the action. Present (Present Perfect) – “He has written” (He wrote). Questions: “Has he written?”, “What has he written?”, “Who has written?” etc.
Past tense (Past Perfect) – “He had written by 3” (He wrote yesterday to 3). Questions: “Had he written?”, “What had he written?”, “Who had written?”.
Future tense (Future Perfect) – “He will have written by 3” (It will write tomorrow to 3). Questions: Will he have written?”, “What will he have written?”, “Who will have written?” etc.
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Finally, the days of the Perfect-Continuous. They are used when talking about actions that last for a period of time. Present Perfect Continuous: “He has been writing for 2 hours” - He writes for two hours. Accordingly, the questions: “Has he been writing?”, “What has he been writing?”, “Who has been writing?”
Past Perfect Continuous: “He had been writing for 2 hours” - He wrote for two hours (when the phone rang). Questions: “Had he been writing”, “What had he been writing?”, “Who had been writing?” etc.
And Future Perfect Continuous: “He will have been writing for 2 hours” - He would write for two hours (when the phone rings). Questions: “Will he have been writing?”, “What will he have been writing?”, “Who will have been writing?” etc.