那个东西;
例句:
" Do you know what'column left'means? "
“ 你知道'全队向左转'是什么意思 吗 ? ”
If you know what is wrong with her, please enlighten me.
如果你知道她出什么问题了,请告诉我。
" Do you know what you are doing is very risky?
“ 你可知道这事情是靠不住的.