语气英语的动词一般可带有三种不同的语气：陈述语气，祈使语气和虚拟语气。不同的语气用动词的不同形式（有的还借助句法形式）来表示。语气陈述语气 (The Indicative Mood)用来陈述一个事实，或提出一个看法，有肯定，否定，疑问或感叹等形式。People get AIDS after having been infected with HIV.How should we act towards people who have AIDS.What a brave girl!语气祈使语气 (The Imperative Mood)用来表示请求，邀请，命令，警告或劝告等。Let me do it.Please keep quiet in the reading room. 虚拟语气是一种特殊的动词形式，一是用来表示说话人所说的话不是一个事实，而是一种假设、猜测、怀疑等 ( 在条件从句中或让步状语从句中 ) ；一是表示说话人的愿望、要求、命令、建议等 ( 在宾语从句、表语从句、同位语从句 ) 。虚拟语气的概念Practice:1.If I ____ (be) you, I _________ (take) her advice.2.If I _______ (be) there then, I ______________(help) them.3.If you _____________________ (go) abroad in the future, you _________ (find) English really helpful.werewould takehad beenwould have helpedwent/should go/were to gowould findPractice:1.If it ________ (rain) last night, it _______ (be) very cool today.had rainedwould be The Subjunctive Mood一 时间选择型 ( 时态前推型 ) 条件从条件从句句 结果主结果主句句与现在事实相反与现在事实相反 diddidwere/waswere/waswould dowould do与过去事实相反与过去事实相反 had donehad done(had been)(had been)would have donewould have done与将来事实相反与将来事实相反 did/were/wasdid/were/waswere to dowere to doshould doshould dowould dowould do1. 含有虚拟条件句有时用 but for, without or otherwise 等词代替条件句 :1.Without your help, I ______________ (fail) in the experiment.2. I was very busy, otherwise I _______________ (join) you in the game.would have failedwould have joined思考 : 还有哪些词语会引起类似的动词形式呢 ?Pratice:1.Even if/though he _____(be) here now, he_________ (not, be) able to help us.2.Nothing _______...
