我会一直在背后支持你的，用英语怎么说？

英语是：I'll stand by you all the time.

句子解释：
stand by 英[stænd bai] 美[stænd baɪ]
[词典] 支持; 准备行动; 信守诺言; 站在旁边;
[例句]British and American warships are standing by to evacuate their citizens if necessary
英国和美国的战舰已准备好在必要时将本国公民撤离出去。

all the time 英[ɔ:l ðə taim] 美[ɔl ði taɪm]
[词典] （在该段时间内） 一直; 向来， 一向; 时时刻刻; 每时每刻;
[例句]All the time I was blind to your suffering.
一直以来，我都没有意识到你遭受的痛苦。

I will support you by your back all the time

I will always back you up. I will always support you.

i'll support you behind forever