答案:am改为were.wish后的宾语从句,谓语动词用过去式表示与目前事实相反的一个愿望,be的过去式were.(2) I wish I have gone to the party last night.have改为had.wish后的宾语从句,谓语动词用"had 过去分词”表示与过去事实相反的一个愿望。(3) The teacher ordered the classroom swept.classroom后加be.order后的宾语从句用虚拟语气,谓语结构为:(should) 动词原形。(4) My suggestion is that we will discuss it another day.will改为should或将will去掉。suggestion,proposal,plan,idea,order,request,advice作主语时,其后面的宾语从句用虚拟语气,谓语构成为:(should) v.(5) The workers on strike demanded that their wages increased.increased前加be.(should)beincreased表示虚拟语气,用于动词demand之后的宾语从句中。(6) If he is here, we would know bow to do it.is改为were.虚拟语气用于条件句,与目前事实相反的一个假设,if从句的谓语动词用过去式,be的过去式用were。(7) The teacher insisted that her students did their homework alone.did改为do.(should)do表示虚拟语气,用于insist后的宾语从句中。(8) The woman talks as if she knows everything.knows改为knew.as汀引导的句子多用虚拟语气,用过去时态表示与目前事实相反。(9) Have he had the time,he would have done it.Have改为Had.省略if的条件从句,原句为If he had had the time,表示与过去事实相反。(10) Without electricity human life will be quite different today.will改为would/should/might.without短语相当于一个条件状语从句,上下句间构成了一个与现在事实相反的一种假设;主句谓语:would/should/might v.