What he said was ok
主语从句 系词 表语
I know want it is The old man thinks he is Mymother works very har
主语 谓语 宾语从句
宾语从句 中 it 形式主语 The old man thinks he is Mymother works very har表语
What he said was ok
主语从句 系词 表语
I know want it is The old man thinks he is Mymother works very har
主语 谓语 宾语从句
宾语从句 中 it 形式主语 The old man thinks he is Mymother works very har表语