if从句表示虚拟语气, should从句呢?

虚拟语气在非真实条件状语从句中的用法及动词形式 ① 表示与现在事实相反的情况 （条件）从句谓语动词形式 主句谓语动词形式 谓语动词用一般过去式 （be用were） should/would/could/might+动词原形（过去将来时）eg.If I were you, I would take an umbrella.如果我是你，我会带把伞。（事实：我不...

(would, could, might) + 动词原形”。 例如：If you should miss the chance, you would feel sorry for it. 如果你错过了这次机会，你会难过的。2. 宾语从句中的虚拟语气。(1) wish后接宾语从句中的虚拟语气：根据从句的意义来判断。A: 表示与现在和将来事实相反的愿望，从句谓语动词用过去...

+动词原形。If places were alike, there would be little need for geographers.如果各个地方都一样，就不需要地理学家了。2.虚拟过去时是表示与过去事实相反的假设，if 从句的谓语形式用过去完成时即had＋过去分词，主句用would / should / could / might + have +过去分词。If he had known ...

a bad mistake．\x0d\x0aIf only you hadn”t told him the news．\x0d\x0a（3）含有虚拟语气的条件状语从句中,如有had,should,were 这三个词的话,在正式或书面语言中可将if省略,再将句子的主语和谓语动词实行全部倒装或部分倒装.如：\x0d\x0aHad they time（=If they had time）...

if虚拟语气的用法归纳如下：一、表示与现在事实相反的情况：1、从句：If主语过去时（Be动词用were）。2、主句：主语 should/would/could/might do。3、例句：（1）If I were you，I would take an umbrella.如果我是你，我会带把伞。(事实：我不可能是你）。（2）If I knew his telephone ...

是。属于had/were/should 的虚拟条件句中省略if，将had/were/should 放在主语之前构成部分倒装的情况。

虚拟语气的倒装只有三种情况：1，Had you come=If you had come （与过去事实相反）2, Should you come=if you should come （与将来事实相反）3.Were you our monitor=if you were our monitor(与现在事实相反）所以不可能有were to 的倒装，只能用should 倒装 ...

Ⅰ用以表示虚拟条件的虚拟语气 ⒈ 用if条件从句表示的虚拟条件，是虚拟条件最普通的方式。① 虚拟现在时表示与现在事实相反的假设，其if 从句的谓语形式用动词的过去式(be 一般用were)，主句用would/ should/ could/ might +动词原形，例如：If I were in your position I would marry her.② 虚拟...

If I were to ask, would you help me?If I had left sooner, I’d have been on time.If I had gotten up earlier this morning, I might not have been late.If he had received the present, he should have thanked her.②虚拟语气在从句中的使用 : 主+（should）+V原 主＋决定、...

现在完成）对现在的虚拟：从句 if + did（过去式） 主句 would/could/should/might + do（动词原型）对将来的虚拟：从句1) if + should + do（动词原型）; 2) if + were to +do（动词原型）; 3) if + did（过去式）; 主句 would/could/should/might + do（动词原型）...