英语选修六外研版Module1SmallTalk课件(23张)

⑤Oh, Mom! You needn't have prepared so much food. Dad and Diana will not come back for supper.
哦，妈妈！你本不必做这么多饭。爸爸和戴安娜不回家吃 晚饭了。(过去不必做但做了某事)
考点·研讨 [典例1] [2014·湖南高考]－I've prepared all kinds of food for the picnic. －Do you mean we ________bring anything with us?
[答案研讨] must have drunk 句意：Harry感觉不舒 服。昨晚在聚会上他肯定喝得不少。由句意可知，此处表示对 过去发生事情的肯定推测，用must have done结构。
[典例3] [2013·浙江高考]I________(enjoy) myself more－it was a perfect day.
[答案研讨] couldn't have enjoyed 句意：我从没有玩得 这么开心过——真是完美的一天。此处是否定词not与比较级 more连用，表示最高级的含义，同时couldn't have done表示 “过去不可能做过某事”。
[典例4] [2013·陕西高考]The children ________(get) lost in the woods; otherwise, they would have been at the lakeside camp as scheduled.
我不必给寄宿家庭买礼物了，因为我已经有一个了。
拓展 情态动词＋have done的几种形式及其意义： 对 的过 推去 测cmmauings'htt/thchoaauvvlededndo'otnnhee肯av或定e d许做on做过e 过…不……可…能做过……
should have done应该做而没做 表 埋示 怨抱 、怨 后、 悔cnwoeoueudldlnd'htliakhvaeevtdeoodhnoaenv本ee没来do必能ne要做希做但望而没已做有经了做
Module 1 Small Talk
Section Ⅱ Grammar
01课前自主预习
用所给动词的适当形式完成句子，并注意每个句子的含义 1. There is no class on Sunday. You ________ (wake) me up so early.(星期天不上课，没有必要叫醒说话人，但是已经叫醒 了)
[答案研讨] needn't 句意：——我已经为野餐准备好了各 种食物。——你的意思是说我们不必再带任何东西了吗？本题 考查情态动词。根据上下文可知设空处表示“不必”。
[典例2] [2013·辽宁高考]Harry is feeling uncomfortable. He ________(drink) too much at the party last night.
金版教程 ·外研版英语 ·选修6
课前自主预习 课堂师生共研 课后演练提能
Module 1 Section Ⅱ 第11页
2. didn't need to do表示过去没必要做而事实上也没做某 事。
I didn't need to buy a gift for my host family as I already had one.
答案：needn't have woken
2. It was an informal party so I ________(wear) a suit.(说话 者知道这不是正式晚会，没必要穿正装，并且也没有穿)
答案：didn't need to wear
3. I bought some fruits home but my wife had bought a lot of them, so I ________(buy) any.(说话人的妻子买了一些水果， 说话人又买了，因此是做了不必做的事)
③You couldn't have known about him ten years ago, when he was still unknown.
十年前你不可能了解他，那时他还不出名。(对过去的推 测，不可能做过……)
④You could have used my car yesterday. I didn't use it. 你昨天本可以用我的汽车。我用不着它。(过去本来能做某 事，但没有做到)
答案：needn't have bought
4. The office had already opened when I arrived so I ________ (wait) outside in the street.(说话人到的时候办公室已 经开门了，所以他没有必要在外面等着并且也没有等)
做了但没做
①It must have rained last night, for the ground is still wet. 昨晚肯定下雨了，地面还是湿的。(对过去的肯定推测) ②I can't find my purse now. I might have left it in the taxi. 我的钱包找不到了，我可能把它忘在出租车里了。(对过去 的推测，也许/或许做o wait
总结：needn't have done过去没必要做但做了某事；didn't need to do过去没必要做也没做某事。
02课堂师生共研
语法·讲座 needn't have done与didn't need to do用法的区别 1. needn't have done表示过去没有必要做某事，但实际上 却做了，常译为“本没有必要做……”。 You needn't have taken a taxi there, for it's very near. 你本没有必要乘出租车到那里的，因为距离很近。