have you seen Tony recently 为什为什么可以用现在完成时而不是过去完成时或一班过去时

Tony,have you seen my waiiet 的短文 have you seen Tony recentlyYes ,i 1(.have seen )him the other day on the street 2.saw ... have you seen anything Have you seen John? have you seen Tony recently 为什为什么可以用现在完成时而不是过去完成时或一班过去时 have you seen tony recently?no,but i ___ dinner with him on sunday .am having .这里怎么理解 “Have You Ever Seen Me? Have you ever seen snow? Since I have seen you Where have you seen them? have you seen的意思 Have You Seen Her 歌词 have not seen you ages what emergencies you have seen I HAVE NOT SEEN YOU , 1.Tony h__ learnt some Putonghua since we stayed at his home.2.--Have you ever learnt Cantonese brfore?--NO,N__3.hAVE YOU SEEN THE DRAGON BOAT RACE.I know the man.I've a__ met him before.3.hAVE YOU SEEN THE DRAGON BOAT RACE y__?No,not y__ you have seen me for many have you ever seen the rain中文歌词