see sth with my own eyes和see sth oneself能互换吗?see sth oneself前要加by 是有一点纰漏，我是说如果都是用第一人称/

see sth with my own eyes和see sth oneself能互换吗?see sth oneself前要加by 是有一点纰漏，我是说如果都是用第一人称/ see sth oneself和with one's own eyes 有无区别?有什么区别? I will believe it when I see it with my own eyes.(同义句）I _________believe it ___________I see it with my own eyes I wil believe it when I see it with my own eyes.(保持原意）I _____believe it _____ I see it with my own eyes. l didn't belive you until l ________(see)you with my own eyes.l didn't belive you until l _________ (see)you with my own eyes. I want to see the product with my own eyes.变为同一句I want to see the product with my own eyes.变为同一句I want to ( ) my own eyes( ) see the product. i will not b______you unless i see it with my own eyes I ——（ not believe ）until I see it with my own eyes. i won't believe it t_____ i see it with my own eyes. I will believe it unless I see it with my own eyes. I can't believe it u___ I see it with my own eyes. I won;t believe it ----- I see it with my own eyes 横线上填什么 I don't believe it --I see it with my own eyes.横线上填什么 I want to see the product with my own eyes（变同意句） i will not believe you unless i___ (see) it with my own eyesam seeing will see saw have seen I see with my I will believe it when I see it with my own eyes.请写一句句意相同的句子 If I didn't see it __ my own eyes.I would never believe it possible.为什么要用with