Question

1. If it were not for the fact         ，I would ask you to do this right now. (ill)

如果不是你病了，我会要你马上去做这事。

Answer 1

1. that you are ill fact后是同位语从句，that在从句中不充当任何句子成分，但不可省略。虽然这是一个虚拟的句子，但fact之后的从句为一客观事实，因此，同位语从句中用陈述语气。