题目内容：

she would have come to help us with the party为什么用 (would have come),
why isn't Lisa here?
she (would have come) to help us with the party,but unfortunately she was ill in hospital.为什么用 (would have come),

优质解答

考查虚拟语气.她本来要来帮助我们准备晚会的,不幸的是,她生病住院了.本句考查与过去事实相反的虚拟语气,故用到would have come.但后面 but unfortunately she was ill in hospital为客观事实,故不用虚拟.注意：虚拟...