英语动词原形过去式现在进行时三单如：do does did doing越多越好,列成表3q

have has had having;come comes came coming;run runs ran running;sing sings sang singing ;put puts put putting ;lie lies lay lying;write writes wrote writing;like likes liked liking;

begin begins began beginning
buy buys bought buyying
....

have has had having;come comes came coming;run runs ran running;sing sings sang singing ;put puts put putting ;lie lies lay lying;write writes wrote writing;like likes liked liking; begin begins began...