Retrospective effect : ভূতাপেক্ষ কার্যকরতা;
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Appropriate Prepositions
Adept in (দক্ষ): He is adept in playing football.
Attain to (লাভ করা): He will not attain to his objective so soon.
Careless of(অসতর্ক): Do not be careless of your health.
Consent to(মত দেওয়া): My father did not consent to the proposal of my sister’s marriage.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
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Idioms
Hold water (ধোপে টেকা): This policy will not hold water in this situation.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
Silver living (hope- আশা বা ভালো দিক): Every cloud has a silver lining.
Turn over a new leaf (begin a new phase of life, নবজীবন শুরু করা) —After his failure he turned over a new leaf.