簡單現在式否定句問題

因為 He has a bath every day. 中的has 係動詞

簡單現在式 he she it 動詞 + s / es (這裡就用has) ,當要轉做否定句時,

動詞的s/es 會比 does 攞走左, 自己就變返原動詞

如以下的例子:

He goes to school everyday.

He doesn't go to school everyday.

goes 轉做否定句就係 does + go (原動詞)

因為用左 does, 之後的字就用 "原型", 即不用轉或加 s /es

好似在 can, may 咁，用左佢地，後面個動詞就不用轉的.

因為 用 了 does (do + es), 已經表達左 "簡單現在式". 好似 "he did not go to school." did 後不用轉 ga !