everybody,that is,except his six-year-old daughter,Jenny.其中的that is是什么成分
问题描述：
everybody,that is,except his six-year-old daughter,Jenny.其中的that is是什么成分
如果改变成句中没有逗号的简单句怎么改？
答
that is在此是插入语,意为,即…….
如果改变成句中没有逗号的简单句,应为,
Everybody except his six-year-old daughter……