语法中说副词要放在实意动词后边，但我发现副词放在实意动词前面很普遍，怎么解释。
例如：gradually increase
further discuss
suddenly lose their strength
dramatically alter
ultimately want to
quickly find out

多数的副词,地点副词,方式副词,频度副词以外的时间副词等都放在实意动词后面,而频度副词通常放在实意动词之前,这样的副词可也不少,例如 hardly,occasionally,always,often,never,already,once,nearly,almost,just,really,suddenly,certainly,still,soon,surely.也有一些方式副词有时可放在实意动词之前,如quietly,gladly,不过意义上略有侧重.如:
He quietly leftthe room after he took the letter.
他拿了信之后就静静地走出去了.
They gladly accepted the invitation.
他们愉快地接受了邀请.
He left the room quietly. That's why no one noticed it.
他是静悄悄地走出屋去的,因此没有人注意.
They accepted the invitation gradly.
他们很愉快地接受了邀请.

语言是活的,语法是对活的语言的总结,归纳,分析.我们要灵活地理解语法.