2023届高三英语一轮复习语法小专题：虚拟语气课件

语法小专题 虚拟语气 虚拟语气的概念： 虚拟语气就是表示说话人的愿望、假设或建议，而不表示客观存在的事实。虚拟语气通过谓语动词的特殊形式来表示。 一. if引起的虚拟条件句 1：与现在事实相反,从句用一般过去时(be动词用were),主句用would/could/might/should +do。 If she had time, she would go with you. If I were a bird, I would fly freely in the air. 一. if引起的虚拟条件句 2：与过去事实相反,从句用过去完成时,主句用would/could/might/should have done。 If he had taken my advice, he would have succeeded in the competition. 一. if引起的虚拟条件句 3：与将来事实相反,从句谓语三选一：①一般过去时②were to do ③should do,主句用would/could/might/should do。 If it rained/were to rain/should rain tomorrow, we would not go climbing. 一. if引起的虚拟条件句 4：错综条件句，即主句和从句与不同时间相反，则根据主从句位置和事实区别对待对号入座。 If you had followed my advice just now, you would be better now. If you were older, I would have allowed you to go there alone yesterday. 一. if引起的虚拟条件句 5：if条件句若省略if，则把were/ should/ had提前到句首构成部分倒装句。 Were I you (= If I were you), I would go abroad at once. Had I arrived (= If I had arrived) five minutes earlier, I would have caught the train. Should he come (=If he should come) today, tell him to ring me up. 一. if引起的虚拟条件句 6：含蓄条件句，即句子含有without, but for, otherwise等词，后面按主句对待。 But for the rain, we would have finished the work. I was ill that day. Otherwise, I would have taken part in the sports meet. I would have delivered a speech, but I had a cold that day. 二、从句谓语用“(should)+动词原形”场合 1：一、二、三、四类动词(一坚持insist二命令order, command三建议advise, suggest, recommend四要求demand, desire, require, request)接从句谓语用should+动词原形，且should可以省略。但应注意insist表示“坚持说”，suggest表示“暗示，表明”时，后接宾语从句应用陈述语气。 二、从句谓语用“(should)+动词原形”场合 It is suggested that the meeting should be put off till next week. The doctor ordered that the patient (should) be sent to hospital without delay. The smile on his face suggested that he was satisfied with our work. 二、从句谓语用“(should)+动词原形”场合 2：一二三四类动词派生来的名词(order, command, advice, suggestion, requirement等)后接从句，该从句谓语动词用should+动词原形，且should可以省略。 We agreed to the order that the task (should) be completed at 5 o'clock. Our only request is that this (should) be settled as soon as