最正规的说法是i support you 经常看美剧你就会听到。
I support you.I am on your side.I am with you./ I agree with you.(这个是说我同意你的时候说的)
I support you! I am for you! I stand at your side. I am favor of you。
I am for you
I am with you. I support you. I stand by you.

①.I support yo。
②.“我永远支持你”的英文:I will always support you. 词汇解析: 1、always 英 [ˈɔːlweɪz; ˈɔːlwɪz] 美 [ˈɔlweɪz; ˈɔweɪz] adv. 永远。
③.I support you.I am on your side.I am with you./ I agree with you.(这个是说我同意你的时候说的)
④.I support you!I am for you!I stand at your side.I am favor of you!
⑤.I am with you. I support you. I stand by you.

I'll back you up!(常用) You can count on me! I'm on your side! I'll support you。
I will always be on your side forever.(I will always support you forever)
I am for you
No matter what you do, I will support you
I support you!I am for you!I stand at your side.I am favor of you!

英文是 I will always support you
I'm on your side 这是最地道的英语表达了。
做你想做的 宝贝 我支持你 Do you want to do, baby, I support you.
I support you 口语里常用"I always back you up.。
I'm behind you比较地道一点。。。 I SUPPORT YOU 是书面的翻译。比较正式。

这是 “主系表” 结构,后面的附加成分应该是 behind you (因为 behind 本身就是介词,不能再加 of),这个附加成分是进一步说明 here 的具体位置,因此是 here 的同位语。 译文:我在这里。
我永远支持你 I will always on your side.
我支持你: Offers support ;I'll stand by you ;I support you 我全力支持你: i'm on your side 我完全支持你.: I'll back you up all the way
我支持你:Offers support ;I'll stand by you ;I support you 我全力支持你:i'm on your side 我完全支持你.:I'll back you up all the wa。
我支持你: Offers support ;I'll stand by you ;I support you 我全力支持你: i'm on your side 我完全支持你.: I'll back you up all the way