有一读者问这样一句话：
(1)She's always helping people.
always是频率副词，为何可与现在进行时连用？ 还有别的频率副词可与进行时连用吗？
always与进行时连用，常具有感情色彩, 或表扬（如上述句[1]）或责备，如：
(2)You're always leaving something.你老是丢三落四的。
其他有的频率副词亦可与进行时连用，如：
(3)The river is constantly flowing into the sea. （频率副词constantly与进行时连用）
(4)He is continually complaining about the noise. （频率副词continually与进行时连用）
此外，频率很高的短语如for ever, all the time也常与进行时连用，如：
(5)He is for ever singing his own praise. （for ever亦可写作forever）
(6)The baby is crying all the time .
