情态动词和虚拟语气

if虚拟条件句的谓语 形式
主句的谓语形式
与现在事实 过去时（be动词用 would /could /should /might
相反
were）
+V.(原形）
与过去事实 过去完成时
相反
done)
(had would /could /might+have+p.p.
/should
与将来事实 可能 相反
1. 过去时（be动词用 would /could /should /might
虚拟语气（二）--- 名词性从句之should +V原形篇
1. 在表示坚持（insist），命令(order, command), 建议(suggest, propose, advise, recommend),
要求(demand, require, request), 希望(desire)，外加一个督促 （urge） 等动词或这些动词派生出来的同根名词后的名词性从句中, 谓语动词用“should + 动词原形”。 It is suggested that we (should) start the work at once. The general commanded that the soldiers (should) advance immediately. My demand is that you (should) get up at six. What do you think of Tim’s proposal that we (should) have a meeting next Friday? 注意: suggest表 “暗示, 表明” ; insist表 “坚持认为” 时不用虚拟语气
虚拟语气
三种语气：陈述语气 祈使语气 虚拟语气 (用来表示说的话不是事实，或 者是不可能发生的情况，而是一种愿 望，建议，假设的语气)
虚拟语气（一）--- 条件从句篇
非真实条件句（虚拟条件从句）表示的是假设的或实际可能性不大的 情况。
考点一：if 虚拟条件从句基本用法 （比一比看谁记得快记得牢！）
turning？（happen） 如果地球突然停止转动，会发生什么事情呢？ 2. Many coal mine accidents ________________________________ if we
had followed the strict safety rules. (avoid) 如果我们遵守了严格的安全 条例，很多的煤矿事故原本是可以避免的。
Her facial expressions suggested that she was angry.
Tom insisted that he hadn’t stolen the watch.
练一练吧：
1> Reluctantly
she
accepted
their
proposal
______________________________. (operate)
高考情态动词考点分析与突破
can (could), may (might), must, need, ought to, shall (should), will (would) . 一、解题技巧细思量 (1) 认真审题，结合所给语境，正确把握说话者的语气、情感、态 度、观点等。 (2) 认真思考所给选项中情态动词的基本特征和用法，并结合语境推 敲答案。 (3) 要注意把握时间概念:
住手术的。
(4) should (not) / ought (not) to have done_______________________________ ① The porter ______________________________ the fire-brigade as soon as he saw the fire in the
她极不情愿地接受了他们要她做手术的建议。
2> Tom insisted that _______________________________________ but we
3. If _____________________________________, I would go to America. （go）
假如要出国，我会去美国。 考点二：虚拟语气条件句型注意点： 1. 虚拟条件句的省略倒装。 条件从句中有should，were，had三个助动词
可以把if省略，并将这三个词提至句首。 If I were you, I would give it up. --- Were I you, I would give it up. If I had had time, I would have run round that lake again. --- Had I had time, I would have run round that lake again. If there should be a flood, what should we do? --- Should there be a flood, what should we do? 活学活用： 1>________________________________that Mary would come to see her, she would never have gone to the party.（know）若她知道Mary要来看 她，她绝不会去参加聚会。 2>Had you arrived at the station ten minutes earlier yesterday, you _______________________________. (catch) 昨天如果你早十分钟到达 车站，就能赶上火车。 3> _________________________________________, your health care and other benefits would not be immediately cut off. (fire ; should) 如果被解 雇，你的医疗保健和其他福利将不会马上中断。
她不可能离开学校了，因为她的自行车还在那儿。
② Tom ______________________ basketball now. I saw him cleaning the
classroom just now. (play)
Hale Waihona Puke Baidu
汤姆现在肯定不在打篮球。就在刚才我还看见他在打扫教室。
(3) may (not) / might (not) have done ________________________
building, which now went up in smoke. (call) 一看到楼房起火，门卫就应该给消防队打电话。现在，楼房被烧 成了灰烬。 You __________________________________ your keys in the office when you went out. (leave) 你不该出去的时候将钥匙留在办公室里。 (5) could have done ① Honey, look at your mistakes in spelling this word, or you ________________________ full marks in this exam. (obtain) 亲爱 的，看看你这个单词拼写错误，不然你这次考试就能得满分了。 ② We ______________________________ the difficulty together, but why didn’t you tell me? (face) 我们本来能一起共同面对困难的，但你为什么没告诉我？ (6) needn’t have done I __________________________ him the Christmas gift by mail because he came home during the Christmas holidays. (send) 我本不必把圣诞礼 物给他邮去，因为他圣诞节期间回家了。 (7) would (not) have done ① Thank you for reminding me of the time, or I _____________________________ yesterday. (late) 谢谢你提醒我时间，不然昨天我就迟到了。 ② If she had returned an hour earlier, Mary ____________________________ the heavy rain. (catch) 如果早一个小时回来，玛丽就不会淋到大雨了。
于肯定句中。
① You have worked hard all day. You __________________. (tired) 你辛
苦干了一整天，一定累了。
②
She
looks
very
happy.
She
______________________________________ the driving test. (pass)
① At this moment, our teacher ________________________________ our
exam papers. (correct) 此时，我们老师可能正在批改试卷。 ② Nobody has ever seen him since that year. He ________________________________. (go) 自从那一年之后没有人看见过他。他可能出国了。 ③ We breathed a sigh of relief at last. Had she known about the risks, she ______________________ with the operation. (go) 我们终于松了一口气。要是她知道这些危险，她可能经受不
二、考点 一 一 来突破
（一）表示推测的情态动词
对现在或将来情况推测，用情态动词 + do / be + n / adj. / be +
doing…；
对过去的推测，用情态动词 + have done / been…；
(1) must have done意为：____________________________ 只能用
情态动词无论是表达“推测和可能性”，还是表达“虚拟”这一概 念，只要是对过去已经发生的事情进行描述，一律 用“_______________________”这一结构；对现在或将来的事情进行 描述，用“_______________________”；对正在发生事情的推测， 用“___________________________”。
她看起来很开心。她一定通过了驾照考试。
(2) can’t/couldn’t have done______________________________
① She____________________________________________, for her bike
is still here. (leave)
were）
+V.（原形）
2. should +V.原形
3. were to + V 原形
1．表示与现在事实相反的假设 If I were you, I would give AIDS patient a hug. 2．表示与过去事实相反的假设 If he had hurried, he could have caught the train. 3．表示与将来事实相反的假设 If you came / were to come / should come tomorrow, we would have the meeting. 自我检测一下吧! 1．_____________________________________if the earth suddenly stopped