sentence: Whenever they go outside , they always keep a plastic bag with them so whatever rubbish they will not throw on the road or outside .
modified: Whenever they are going to outside always keeping the plastic bag with them so whatever rubbish thing they will not thrown to the road or outside .
transformation: VERB:TENSE, VERB:FORM, OTHER, VERB:FORM, DET, NOUN, K, VERB:FORM, PREP