Simple: Inspite of + Possessive + Non-finite verb +  extentsion +, +Subject +verb +object/extension.
Inspite of his being ill, Karim made a good result in the SSC exam.
তার অসুস্থ হওয়া সত্বেও, করিম এস এস সি পরীক্ষায় ভাল ফলাফল করেছিল।
Inspite of his completing the work in time, he failed to get better pay.
Complex: Though/Although + Subject +verb +object+,+Subject+verb+object/Extension.
Though Karim was ill, he made a good result in the SSC exam.
যদিও করিম অসুস্থ ছিল, সে এস এস সি পরীক্ষায় ভাল ফলাফল করেছিল।
Though he completed the work in time, he failed to get better pay.
Compound: Subject+ verb +object/Extension+but +Subject+verb +object/Extension.
Karim was ill but made a good result in the SSC exam.
করিম অসুস্থ ছিল কিন্তু এস এস সি পরীক্ষায় ভাল ফলাফল করেছিল।
He completed the work in time but he failed to get better pay.