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 Perfect (I have done) → dùng khi thời gian CHƯA KẾT THÚC (today, this week, this year, recently, so far). Present Perfect (chưa kết thúc) Simple Past (đã kết thúc) I've smoked 20 cigarettes today . I smoked 20 cigarettes yesterday . Tom hasn't been ill this year . Tom wasn't ill last year . Have you seen Ann this morning ? (vẫn còn sáng) Did you see Ann yesterday morning ? 📅 b) Các từ chỉ thời gian thường dùng ✅ Present Perfect thường dùng với: today, this morning/afternoon/week/month/year, recently, so far, up to now, in my life, ever, never, for, since. ✅ Simple Past thường dùng với: yesterday, last night/week/month/year, ago, in 1990, when I was young, then. 💡 Mẹo nhớ: Nếu thời gian đã trôi qua hoàn toàn → Simple Past. Nếu thời gian vẫn còn tiếp diễn → Present Perfect. 🔄 c) ...