He doesn't often play.

一般疑问句：Do( Does ) +主语+动词原形+其它。如：

- Do you often play football?

- Yes, I do. / No, I don't.

当主语为第三人称单数时，要用does构成一般疑问句。如：

- Does she go to work by bike?

- Yes, she does. / No, she doesn't.

特殊疑问句：疑问词+一般疑问句。如：How does your father go to work?

动词+s的变化规则

1.一般情况下，直接加-s，如：cook-cooks, milk-milks

   2.以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes