Present Perfect Continuous

Grammar Rule

চলমান সম্পূর্ণ বর্তমান — Present Perfect Continuous

কখন ব্যবহার হয় (When to use):
• অতীতে শুরু হয়েছে এবং এখনও চলছে:
  আমি ২ ঘণ্টা ধরে পড়ছি (এখনও পড়ছি)।
  → I have been studying for two hours.
• সম্প্রতি যা করছিলাম, তার ফলাফল এখন দেখা যাচ্ছে:
  সে সারাদিন কাজ করেছে — তাই সে ক্লান্ত।
  → She has been working all day. (That's why she's tired.)

গঠন (Structure):
  Positive: Subject + have / has + been + V-ing
  Negative: Subject + have / has + not + been + V-ing
  Question: Have / Has + Subject + been + V-ing?

  have → I / You / We / They
  has  → He / She / It

🔑 Signal words:
  for (কতক্ষণ) + since (কখন থেকে)
  for 2 hours | for a week | since 9 AM | since Monday

💡 Present Perfect vs Present Perfect Continuous:
  I have read the book.         → পড়া শেষ (completed — result)
  I have been reading the book. → এখনও পড়ছি (ongoing — duration)

⚠️ সাধারণ ভুল:
  I am studying for 3 hours.         ❌  (এখানে PP Continuous হবে)
  I have been studying for 3 hours.  ✅
  She has been learn French.         ❌
  She has been learning French.      ✅  (been + V-ing)