Biliyorum ki sen de gelmek istiyorsun.
English: I know that you also want to come.
In Turkish, 'iç içe birleşik cümleler' are sentences where one clause is embedded inside another. This means you have a sentence within a sentence, often using verbals or clauses as objects or subjects.
You use 'iç içe birleşik cümleler' in Turkish when you want to express complex ideas, such as explaining what someone said, thought, or felt, or when the subject or object of the main sentence is itself a clause.
Biliyorum ki sen de gelmek istiyorsun.
English: I know that you also want to come.
Duydum ki sınav çok zor olmuş.
English: I heard that the exam was very difficult.
Onun ne söylediğini anlamadım.
English: I didn't understand what he/she said.
Gelip gelmeyeceğini bilmiyorum.
English: I don't know whether he/she will come.
Yapmam gereken işleri bitirdim.
English: I finished the tasks that I had to do.