حال کامل: Active و Passive | صفت جزئی | گرامر پیشرفته انگلیسی

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00:00 مقدمه
00:30 Active to Passive formulation
00:55 Passive formulation - Present Perfect - example 1
01:32 Passive formulation - Present Perfect - example 2
02:05 Passive formulation - Present Perfect - example 3
02:58 Three uses of the Past Participle - example 1
03:48 Three uses of the Past Participle - example 2