For one thing : একটা কারণ হল; একটি কারণে;
Related Words
for nothing  for one thing  fornothing  fronting  See Words Also In
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Appropriate Prepositions
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Entitled to (অধিকারী): He is entitled to a reward for honesty.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
Bear in mind (remember— মনে রাখা —V): You should also bear in mind the additional costs of the mortgage.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Pin money (স্ত্রীর দেয়া হাত খরচ)— She saved her pin money.
To the backbone (হাড়ে হাড়ে): I know this boy to the backbone.
Well off (স্বচ্ছল) - Jim and Della were not well off.