First of all : প্রথমত; সর্বাগ্রে; আগু; আগেভাগে;
Related Words
first floor  first of all  firstfloor  firstof all  See Words Also In
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Appropriate Prepositions
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Die for (আত্নত্যাগ করা): Our Chairman died for our country.
Play at (খেলা): I do not play at cards.
Play with (খেলা করা/ মজা করা): I shall not play with him.
Rely on (নির্ভর করা): We should not rely on a lazy man.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
At times (মাঝে মাঝে): He at times comes here.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
Out of date (সেকেলে): This fashion is out of date.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.