(
课件网) 虚拟语气语气(语气表示说话人的意图或态度。)陈述语气虚拟语气祈使语气表示所说的话是事实。表示请求、命令、警告、禁止等。表示说话人一种主观的想象、推测、愿望和建议等。Water flows to the lower place.China lies in the east of Asia.Don’t make noise.Take it easy.I wish that I lived on the moon.If I were a millionaire, I would buy anything I want.虚拟语气的结构形式时态退后型用过去时态(should)+doif条件虚拟语气Whatwouldyoudoif yousawthe accident The soupwould have beenbetter if ithad hadmore oil and less salt.If hewere tofinish his homework, hewould goout to play.If itshould snowagain, wewould runinto trouble.错综时间条件虚拟语气当虚拟条件从句和主句动作发生的时间不一致时，主句和从句的谓语动词要根据各自所指的不同时间运用适当的虚拟语气形式。If I were you, I would have comeyesterday.If I had listened carefully that day, I would solve it smoothlynow.If he had started out early this morning, he would arrivewithin one hour.If he should become an expert, he might have made a lot of great effortsin the past.if条件状语从句中的省略如果条件从句中含有were/had/should时，可以省略if，把were/had/should提到句首，用倒装结构。Were it possible, I would continue.Had you stopped me, I wouldn't have made such a big mistake.Should I go to the moon one day, I would live there for a long time.含蓄条件虚拟语气虚拟条件句中的条件从句有时并不表示出来，却暗含在上下文中，这种句子叫做含蓄条件句。这种条件可暗含在词或短语中，常见有without,or,otherwise,but,with,but for,but that等。But for your help, we couldn't have succeeded.(=If you hadn't helpedus, we wouldn't have succeeded.)She was ill, otherwise she could have been present at the meeting.(=If she hadn't been ill, she could have been present at the meeting.)But that it rained heavily, we could have arrived home.(=But for the heavy rain/If it hadn't rainedheavily, we couldhave arrived home.)would/could/might/should+动词原形+ but+现在时陈述句→表示同现在事实相反的假设We would arrive earlier but the car breaks down.(If the car didn't break down, we would arrive earlier.)would/could/might/shouldhave +过去分词+ but+过去时陈述句→表示同过去事实相反的假设We would have arrived earlier but the car broke down.(If the car hadn't broken down, we would have arrived earlier.)现在时陈述句+otherwise/or+would/could/might/should+动词原形→表示同现在事实相反的假设The car breaks down otherwise we would arrive earlier.(If the car didn't break down, we would arrive earlier.)过去时陈述句+otherwise/or+would/could/might/shouldhave +过去分词→表示同过去事实相反的假设The car broke down otherwise we would have arrived earlier.(If the car hadn't broken down, we would have arrived earlier.)If it were not for...“如果不是因为…”，表示同现在事实相反的假设；If it had not been for...“如果当时不是因为…”，表示与过去事实相反的假设。If it were not for you, I should (would) be locked in the room.If it had not been for the doctor's timely arrival, the injured driver would have died.虚拟语气在名词性从句中的运 ... ...
