如果我离开，请不要想我，因为你已经失去我了 ..

If I left（I were away ）, please do not have to think me, because you have lost me(这是一个虚拟句)

英语：If I leave, please do not have to think me, because you already lostme..
日语：もし私は离れるならば、私を思ってはいけなくて下さい、あなたがすでに私を失ったためです ..

If I leave, please do not think me, because you have lost me ..

If I leave, please do not have to think me, because you already lostme
是对的！

If I leave, please do not have to think me, because your already lost me

don't miss me the day i leave you ,just i have not belong to you......