৩৬তম BCS — Tense প্রশ্নসমাধান

এই পরীক্ষায় ২টি Tense-সম্পর্কিত প্রশ্ন — present perfect continuous ও past indicator।

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প্রশ্ন ৫৬: I have been living in Dhaka ___ 2000.

Options: (a) since ✓ • (b) From • (c) after • (d) till

Since vs. For — Golden Rule

Marker	Used with	Example
since	Specific point in time	since 2000 / since Monday / since yesterday
for	Duration of time	for 20 years / for 3 days

Present Perfect Continuous (have/has been + V-ing)

• ব্যবহার: অতীতে শুরু, এখনো চলছে এমন কাজ
• সাথে — since (point) বা for (duration)

Examples that BCS loves

• I have been working since Monday. ✓
• She has been studying for two hours. ✓
• We have been waiting since 7 AM. ✓

Why not 'from'?

'From' indicates a starting point but doesn't naturally pair with present perfect continuous in modern English. Use 'since' instead.

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প্রশ্ন ৬৩: Identify the correct sentence?

Options: (a) Yesterday, he has gone home • (b) Yesterday, he did gone home • (c) Yesterday, he had gone home • (d) Yesterday, he went home ✓

Key Rule: Definite past-time adverbs → Simple Past only

Words like — yesterday, last week, ago, in 1990, then — require simple past tense.

Sentence	Why?
Yesterday, he went home.	✓ Yesterday + simple past
Yesterday, he has gone home.	✗ Yesterday + present perfect: never
Yesterday, he had gone home.	✗ Past perfect needs another past reference
Yesterday, he did gone home.	✗ Grammatically wrong; should be 'did go'

When to use Past Perfect (had + V3)?

• যখন একই অতীতে দুটি action — পরেরটা reference হয়, আগেরটা past perfect:
  • 'Before I arrived, he had gone home.' ✓
  • Here 'had gone' makes sense because we have 'arrived' as reference.

Exam shortcut

• দেখো sentence-এ yesterday/last/ago/in [year] আছে কিনা — থাকলেই simple past।
• 'had + V3' স্বয়ংক্রিয়ভাবে ভুল যদি দ্বিতীয় past action না থাকে।

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টপিকটি গভীরে শিখুন

Tense — মূল লেকচার শিট — ১২ tense-এর structure, time markers, common errors, narration-এ tense change, conditional tense, BCS-এর সবচেয়ে ভ্রান্ত-ব্যবহৃত tense প্যাটার্ন।