If you were here ,I'm sure you_would_help__(help) you.

问题描述:

If you were here ,I'm sure you_would_help__(help) you.

正确,不过:
you 改为me 会更好,不然不通呢.
If you were here ,I'm sure you( would help) you.
这也是虚拟语气:如果你在这儿,我确信你会帮你(我).
从句一般现在时,主句一般将来时.
祝开心!哦,不小心打错了(*^__^*) 嘻嘻……