always ,often,usually,sometimes之类的词可以放在句末吗

always ,often,usually,sometimes之类的词可以放在句末吗 often,always,usually,sometimes之类的词可以放在句首或句末吗 always、usually、often、sometimes放在句子的哪里? 频度副词always/usually/often/sometimes/never的用法区别 频度副词always.usually.often.sometimes.never的用法区别 always,usually,often,sometimes用法的区别?急!@ usually often sometimes always 是分为哪一类的? always,usually.often.sometimes,seldom,分别是什么意思 sometimes always often usually哪一个用于现在完成时 sometimes often usually always never 造句 用always often sometimes never usually always usually often 的区别在什么地方