if you were here, sure i will told you hand。

都怎么翻译的啊,哪儿有told you hand?

肯定是打错了

if you were here, I'm sure I will hold your hand

楼主打错了吧？
应该是if you were here, sure i will hold your hand吧？
如果你在这里，我一定会牵你的手。

这是虚拟结构。
如果当时你在这儿的话，我肯定会告诉你……的。（觉得你后面抄错了）

如果当时你在这儿的话，我肯定会告诉你

虚拟条件句 后面应该是I would told you hand.

如果你在这儿，那么我将亲自告诉你.

如果你是在这里，一定会告诉你的手。