Page 22 - Demo

21 Mohammad Mahfooz Hussain4. Present Perfect TenseActive voiceSubject(the doer of the action)Has/ Have V3 objectany other part (optional)Passive voiceSubject(receiver of the action)Has/ Have been V3By + the doer of the action(optional)Affirmative Sentences:Active Voice Passive VoiceThe scientists have developed a new vaccine.%u0627%u0633%u062f%u0633%u0646%u0626%u0627%u0648%u0646%u06ba%u06d2%u0646%u0627 %u06cc%u06cc%u0626%u0646%u0648%u0646%u06cc%u0633%u06a9%u06cc%u0627%u06cc%u062a%u0631%u06a9%u06d2%u06c1%u06d4A new vaccine has been developed by the scientists. %u06cc%u06cc%u0626%u0646%u0648%u0646%u06cc%u0633%u06a9%u06cc%u0627%u0633%u062f%u0633%u0646%u0626%u0627%u0648%u0646%u06ba%u06d2%u06a9 %u0627%u0630%u0631%u06d2%u0639%u06cc %u0627%u06cc%u062a%u0631 %u06a9 %u06cc%u0626%u06af %u06d2%u06c1%u06d4The author has written an inspiring book.%u0641%u0646%u0635%u0645%u06d2%u0646%u0627 %u06cc%u0648%u062d%u06c1%u0644%u0635%u0627%u0632%u0641%u0627%u0627%u062a%u06a9%u0628%u06cc%u06be%u06a9%u0644%u06d2%u06c1%u06d4An inspiring book has been written by the author.%u0627 %u06cc%u0648%u062d%u06c1%u0644%u0635%u0627%u0632%u0641%u0627%u0627%u062a%u06a9%u0628%u0641%u0646%u0635%u0645%u06d2%u06a9%u0630%u0631%u06d2%u0639%u06cc%u06cc%u06be%u06a9%u0644%u06cc%u0626%u06af%u06d2%u06c1%u06d4Negative Sentences:Active Voice Passive VoiceThe workers have not completed the construction.%u062f%u0648%u0631%u0648%u06ba%u06d2%u0646%u0631%u06cc%u0645%u0639%u062a%u0644%u0645%u06a9%u0645%u06ba%u06cc%u06c1%u0646%u06a9%u06d2%u06c1%u06d4 %u0645The construction has not been completed by the workers.%u062f%u0648%u0631%u0648%u06ba%u06d2%u06a9%u0630%u0631%u06d2%u0639%u06cc%u0644%u0645%u06a9%u0645%u06ba%u06cc%u06c1%u0646%u06a9%u06cc%u0626%u06af%u06d2%u06c1%u06d4 %u0631%u06cc%u0645%u0639%u062a%u0645The chef has not prepared the special dish.%u06cc %u0648%u0631%u06cc%u0686%u06d2%u0646%u0648%u0635%u062e%u06cc%u0635%u0688%u0634%u0627%u06cc%u062a%u0631%u06ba%u06cc%u06c1%u0646%u06a9%u06d2%u06c1%u06d4The special dish has not been prepared by the chef.%u0648%u0635%u062e%u06cc%u0635%u0688%u0634%u06cc %u0648%u0631%u06cc%u0686%u06d2%u06a9%u0630%u0631%u06d2%u0639%u06cc%u0627%u06cc%u062a%u0631%u06ba%u06cc%u06c1%u0646%u06a9%u06cc%u0626%u06af%u06d2%u06c1%u06d4