sentence: First of all , when children are small , they are polite and always listen to parents . For example , they do homework , go to sleep at regular hours and come back home after school .
modified: First of all , when children are small , they are polite and always listen parents , for example they are doing homework , going to sleep in regular hours and back home after school .
transformation: PREP, PUNCT, PUNCT, VERB:TENSE, VERB:FORM, PREP, VERB