为什么是be seriously ill ill词性是什么

为什么是be seriously ill ill词性是什么 He is seriously ill.为什么serious要用副词哪,这里的ill是什么词性哪. ill是什么词性? sarah was seriously ill It gave me quite a shock to be told I was seriously ill.为什么t He ___(discover)to be seriously ill later. She is ______(serious) ill 为什么用seriously啊 fall ill和be ill fall ill = be ill fall ill 什么词性 ill hearing his father was seriously ill ,_____.