1、重点语法精析Unit 24 Society Period ThreeGrammar 课件（北师大版选修8，课标通用）重点语法精析Persuasion说服在正式的英语书面语和非正式的英语口语中，常用不同方式来告诉别人应该做什么。下面是一些常用来表示“说服”的词、短语和句式及其用法。重点语法精析1ought to/should情态动词ought to 和 should，后面跟动词原形或完成形式。ought to更多反映客观情况，表示根据法律、义务“应当”，比should语 气 强；should表 示 主 观 看 法，一 种 建 议、劝 说。should/ought tohave done 表示过去
2、应该做而实际没有做的事情，含有责备或遗憾的语气，其否定式为“should not have done/ought not to have done”。重点语法精析As a Party member，you ought to give the lead.作为党员，你应该带头。You should brush your teeth before you go to bed.你在睡前应该刷牙。We should have studied last night，but we went to the concert instead.我们昨晚本应该学习，却去看了演唱会。They ought not to
3、have let you out of hospital so soon；otherwise，you would feel better.他们本不该让你这么快出院的，不然的话，你身体现在会大有好转。重点语法精析2insist/demand/suggestinsist“坚决要求”；demand“要求”；suggest“建议”。这些动词后的宾语从句中谓语常用“(should)动词原形”。【注意】insist作“坚持认为/说”讲时，宾语从句不用虚拟语气；suggest指“暗示，表明”，宾语从句中谓语动词用陈述语气，不用虚拟语气。重点语法精析He insisted that we(should)acc
4、ept these gifts.他一定要我们收下这些礼物。He demanded that we(should)start right away.他要求我们马上动身。He suggested that the work(should)be started at once.他建议立即动工。Mike insisted that he had never stolen anything.迈克坚持说他从来没偷过东西。His attending her wedding party suggested that he had forgiven her.他去参加她的婚礼表明他已经原谅她了。重点语法精析3It
5、 is(high/about)time(that).在It is(high/about)time(that).句型中，从句的谓语动词用过去式或should动词原形(should不能省略，be用were)来表示，意为“(早到了)该的时候了”。Its high time that we protected the historical old buildings.到了我们保护历史古建筑物的时候了。重点语法精析4I would rather you.在Id rather(that)you.句型中，从句谓语动词要用虚拟语气，即用一般过去时表示当时或将来要做的事；用过去完成时表示过去要做的事。Id ra
6、ther you met her at the airport tomorrow morning.我但愿你明天早上能在机场见到她。Id rather you hadnt told him the news that day.我真希望你那天没有把消息告诉他。重点语法精析5Youd better.Youd better.“你最好”，后跟不带to的不定式，其否定形式是Youd better not do sth。Youd better go to hospital at once.你最好立即去医院看病。重点语法精析6If I were you，I would.If I were you，I woul
7、d do/have done 表示“要是我是你，我(就)会”。If I were you，I would accept the job at once.如果我是你，我会立即接受这个工作。If I were you，I would take his advice.如果我是你，我就听他的劝告。如果把if省略，则要将were移到主语前，构成倒装，即“Were I you，I would.”。Were I you，I would refuse.我要是你，就会拒绝。重点语法精析【翻译句子】1如果我是你，我不会步行去那里。_2他建议运动会推迟到下周末。_3我宁愿你骑自行车去那里。_4如果你采纳了我的建议，
8、你就不会在英语考试中失败。_5你最好后天不要动身去北京。_重点语法精析答案 1.If I were you，I wouldnt go there on foot.2He suggested that the sports meeting(should)be put off till next week.3I would rather that you went there by bike.4If you had taken my advice，you wouldnt have failed in the English exam.5You had better not leave for Beijing the day after tomorrow.
