TRÍ ĐỨC ENGLISH - Bài 21: Present Perfect vs Simple Past (2) TRÍ ĐỨC ENGLISH Chuyên nghiệp · Tận tâm · Bứt phá 📘 BÀI 21: PRESENT PERFECT vs SIMPLE PAST (2) ⏰ a) Thời gian đã kết thúc vs chưa kết thúc 🔑 Tom lost his key yesterday . 📅 Tom has lost his key today . 📌 Simple Past (I did) → dùng khi thời gian đã KẾT THÚC (yesterday, last week, in 1999, two years ago, when I was a child). 📌 Present Perfe...