usually,often的用法是把usually,often放在句子中是加ing还是s还是原型

usually,often的用法是把usually,often放在句子中是加ing还是s还是原型 usually often sometimes 的用法是什么 usually 和often 用法上的区别? always,often,usually用法 频度副词always/usually/often/sometimes/never的用法区别 always,usually,often,sometimes用法的区别?急!@ 频度副词always.usually.often.sometimes.never的用法区别 often 的usually区别 usually的用法急 usually的用法 频度副词always/usually/often/sometimes/never的区别及用法请快回复,紧用! 求助sometimes,always,often,usually,的用法和区别,越详细越好,要例子~~ usually often occasionally sometimes的频率区别是怎样的 usually often sometimes always 是分为哪一类的? often的同义词是什么?是usually还是always? often与usually的区别? often和usually的区别 sometimes often usually的区别