I know that he did the work- বাক্যটির সঠিক পরিবর্তিত voice কি হবে?

A It was known to me that the work has been done by him.

B It was known to me that the work had been done by him.

C It was known to me that the work was done by him.

D It is known to me that the work was done by him.

Solution

Correct Answer: Option D

That এর আগের অংশ এবং পরের অংশ যেটা যে tense এ আছে সেটা সেই tense এই পরিবর্তন করতে হবে।
প্রথম অংশ present indefinite tense এ আছে । সুতরাং passive voice হবে-
sub হয়ে যাবে obj + am/is/are+ verb এর past participle form + by + obj হয়ে যাবে sub।
 
note: এখানে  obj নেই তাই It is known to me হবে।
 
দ্বিতীয় অংশ past indefinite tense .সুতরাং passive voice হবে-
sub হয়ে যাবে obj + was/were+ verb এর past participle form + by + obj হয়ে যাবে sub। 

It is known to me that the work was done by him.

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