do做加强语气时的用法

作用四：语气do
为突出感情色彩,do常用于祈使句、强调句和倒装句中,以加强语气.如：
①Do be careful.
②Don't tell a lie.
③He did come.
④-You often go to the park.
-So we do.
但不可不可以说I do don't love you