sentence: A man in the front yard showing how to mow the lawn. sentence:  He first moves all the debris out of the way so that nothing gets caught in the mower before mowing. sentence:  Then he uses a stethoscope to listen to the mower while he puts oil in it. sentence:  He suggest that you finish mowing by sunset and if you are using a pushing mower you should keep your back striaght and arms bent.