isten pass work sit walk sit walk stay do shave watch enjoy 的单数第三人称,现在分词,过去式是什么

第三人称单数：Istens passes works sits walks staies does shaves watches enjoys
现在分词：istening passing working sitting walking staying doing shaving watching enjoying
过去式：istened passed worked sat walked staied did shaved watched enjoyed
「够详细的吧」~