肯定式 I/We/You/They+动词原形+其他成分
She/He/It+动词第三人称单数形式+其他成分
否定式 I/We/You/They don’t+动词原形+其他成分
She/He/It doesn’t +动词原形+其他成分
Do I/you/we/they+动词原形+其他成分
Yes, I/you/we/they do. No, I/you/we/they don’t.
Does she/he/it +动词原形+其他成分
Yes, she/he/it does. No, she/he/it doesn’t.
一般情况下直接+s work-works ask-asks see-sees
以s, x, ch, sh, o 结尾+es watch-watches go-goes do-does wash-washes
以辅音字母+y结尾,变y为i加es try-tries study-studies fly-flies