总结:第一人称,第二人称作主语时,用have,第三人称作主语时用has。
第一人称(I)
I have turned off the light.
第二人称(you单数)
You have turned off the light.
第二人称(you复数)
You have turned off the light.
第三人称(he/she/it)
He/ She/ It has turned off the light.
词汇解析
have
英 [həv; əv; hæv] 美 [həv; əv; hæv]
vt. 有;让;拿;从事;允许
aux. 已经
n. (Have)人名;(芬)哈韦;(德)哈弗
短语
have a good rest 好好休息
have a tacit understanding 心照不宣