变单数第三人称,现在分词和过去时

get gets getting got
change changes changing changed
visit visits visiting visited
sit sits sitting sat
watch watches watching watched
enjoy enjoys enjoying enjoyed
talk talks talking talked
clean cleans cleaning cleaned
spend spends spending spent
cook cooks cooking cooked

get--getting--got
chang--changing--changed
visit--visiting--visited
sit--sitting--sat
watch--watching--watched
enjoy--enjoying--enjoyed
talk--talking--told
clean--cleaning--cleaned
spend--spending--spent
cook--cooking--cooked

第三人称直接加s
现在分词getting changing visiting sitting watching enjoying talking cleaning spending cooking
过去分词gotten changed visited sat watched enjoyed talked cleaned spent cooked