나의 선생님은 내가 더 많이 읽도록 격려했다 = my teacher encouraged me to read more

=> Corrected : The sentence is corrected grammatically but there are no proper capitalization and punctuation mark.

​​ My teacher encouraged me to read more​.

그녀는 나의 친구들을 모욕했다 = She insulted my friends.✔

​=> Corrected : The sentence is corrected grammatically.

그녀는 온라인에서 돈을 번다 = She makes money online

​=> Corrected : The sentence is corrected grammatically but there is punctuation mark.

​She makes money online​.

Thank you, Eunchan~