请帮忙分析一下下面这个英语句子的句子成分Japan’sPrimeMinisterisappealingtotheJapanesepeopletounitetoovercomewhathesays,istheworstcrisishiscountryhasfacedsincetheendofWorldWarII.whathesays及之后
请帮忙分析一下下面这个英语句子的句子成分
Japan’sPrimeMinisterisappealingtotheJapanesepeopletounitetoovercomewhathesays,istheworstcrisishiscountryhasfacedsincetheendofWorldWarII.
whathesays及之后的部分在整个句子中做何成分?这句话前后分别需要逗号么?