sentence: Then , he taught me how to play . For example , when hitting , use the strength of the whole arm and do n't just use your elbow , or you will feel tired quickly .
modified: Then , he taught me how to play , for example , when hitting , used the strength of the whole arm and did not just used elbow , or you would feel tired shortly .
transformation: PUNCT, VERB:TENSE, OTHER, OTHER, VERB:TENSE, ADV