Some doubts about "copulative sentences" in Chinese
The same structure exists in Chinese


  Jenny (is) Jenny --> 珍妮(就是)珍妮 
  
  Money (is) money --> 錢(就是)錢


~


  She's (not being/ not like) herself today --> 她今天(不是/ 不像是)她本人 
  
  Silver and coin (was not) the first currency  --> 錢銀(不是)最初的貨幣 
  
  This amount of money (is not/ is not counted as) money to me --> 這數目的錢對我來說(不是/不算是)錢


~


  (Are) they them? --> '他們' (是那個) '他們'嗎?
  
  (is) he him? -->'他'(是那個)'他'嗎?


~


  He (is) me (and) she (is) you -->'他'(就是)我(而)'她'(就是)妳
  
  Money is currency ; currency is money --> 錢(就是)貨幣；貨幣(就是)錢