They knew him to be a thief. (Complex)

• Subject + Verb + Object + to be +…যুক্ত simple sentence কে complex sentence এ রূপান্তর করতে হলে,- Subject বসে,- verb বসে,- that বসে,- object এর subject রূপ বসে এবং - tense ও person অনুযায়ী auxiliary Verb বসে।- adjective বসে।Simple: They knew him to be a thief.Complex: They knew that he was a thief.