usually,always后面第三人称单数加不加S?答:一般过去时,即使有usually,always等,也不用加s,而是用过去式,如 He always(usually,never) did his work after dinner last year.如果前面有情态动词,如can,will,would,may,can,could,should,might,must,need等,或是不定式(动词前加to)的,就不用加s 如 He can always do his homework ...