Believe in that there sign.For as long as it hangs there we'

as long as 在这里是表示“只要”。 for,引导原因状语从句,表示“因为”所以,for as long as it hangs there是从句。后面的we've got hope是主句,主句为什么是现在完成时,应该根据上下文来理解。它与“For as long as anyone could remember,the bell had struck the hours day and night”这里面的as long as ,是表示“因为,既然”,所以,用法不太一样。