Gratuitously : অবাঞ্ছিতভাবে; অযৌক্তিকভাবে; বিনা পয়সায়; বিনা দক্ষিণায়;
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Appropriate Prepositions
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Look at (তাকানো): Students look at the blackboard.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
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Idioms
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
Man of straw (অপদার্থ): We do not care for a man of straw like you.
Of course (অবশ্যই): Of course, you know what that meant.
Slow coach (অলস): You cannot expect much from a slow coach.