she is always so graceful 该句中always so做什么成分

she is always so graceful 该句中always so做什么成分
she is always so graceful 在这句中:she—主语,is—系动词,graceful—“形容词”做“表语”
always so—在句中做什么成分（谢谢大家）
谢谢你们的回答，那就是说always—在句中修饰“is”壮语；so—在句中修饰“graceful"做状语？