The patient is no supposed to have left hospital so soon as he is not fully recovered from his illness.和：You oughn't to have gone to his funeral.I know it would upset you.這兩句話中在be supposed to do 和 oughn't to do的動詞前面，都出現了一個have.感覺有點多余，請問have在這里做什么用法，什么情況下要添這個have?

熱心網友

第一個，強調left的動作發生在suppose之前，用完成時態，含有，沒有預料到的意思，很意外。第二個是虛擬語氣，你可以看看語法書關于虛擬語氣的用法。此處，因為是過去時，所以要用退后一個時態，用完成時。 還有，是不是應該是 not supposed to 而不是no supposed？呵呵，高考一過，我的語法就差很多了，有錯誤的地方，幫我指出來哦！