高考英语高三一轮复习：情态动词NEED 的用法- 课件（21张ppt）.pptx

1、Period Period TwoTwo GrammarGrammar How to use “Need” N N e e e e d d 主主 要要 用用 法法 NEED 做名词的用法 A NEED 做实意动词的用法 B NEED 做情态动词的用法 C NEED 做名词的用法 A There is a need for qualified teachers. There is no need for you to get up early tomorrow. The house is in need of a thorough clean. NEED 做名词的用法 A Im in need

2、of some fresh air. to fulfil an emotional need. NEED 做名词的用法 A financial needs to meet childrens special educational needs Do you need any helpneed any help? I need toneed to get some sleep. This shirt needs washingneeds washing. This shirt needs to be washedneeds to be washed. 思考如何其否定形式如何变换？ NEED 做实

3、意动词的用法 B NEED 做情态动词的用法 C You neednt finish that work today. You neednt go there if you dont want to. NEED 做情态动词的用法 C 好 简 单 You neednt have watered the flowers, for it is going to rain. You dont need to water the flowers, for it is going to rain. NEED 做情态动词的用法 C 过去没必要做某事而实过去没必要做某事而实 际上做了际上做了 不一定非做某事不

4、可不一定非做某事不可,实实 际上没做际上没做 Practice Makes Perfect! 【活学活用活学活用】 .在句中空白处填入适当的内容在句中空白处填入适当的内容(1个单词个单词)或括号内单词的正或括号内单词的正 确形式确形式 。 1. You waited for Mr Zhang yesterday, didnt you? Yes, but we _ (need not). He didnt go to the school yesterday. 2. His broken bicycle needs _ (repair) immediately to attend the com

5、ing cycle racing. 3. Its quite warm here; we _ turn the heating on yet. repairing/to be repaired neednt have neednt 4. Did you ask Sophia for help? I _ need toI managed perfectly well on my own. 5. Mark _(hurry). After driving at top speed, he arrived half an hour early. 6. Must I finish it today? Y

6、ou _ (need not). Just finish it as soon as possible. neednt have hurried didnt dont need to 7The weather turned out to be fine yesterday. I _ (take) the trouble to carry my umbrella with me. 8Catherine，I have cleaned the room for you. Thanks. You_(do) it. I could manage it myself. neednt have taken

7、neednt have done . 完成句子完成句子 1You _ (不必完成不必完成) the work today. 2Your clothes _ (需要洗了需要洗了) 3You _ (本不需要去本不需要去) to school yesterday. Because it was Saturday. 4I _ (不必早起床不必早起床) this morning， so I stayed in bed until 9 am. 5John went to the station with the car to meet Mary, so she _ (本来没必要步行本来没必要步行) bac

8、k home. neednt finish need washing/to be washed neednt have gone didnt need to get up early neednt have walked Vocabulary Expansion 词汇拓展 Tom, you are too lazy. The work should have been finished yesterday. 汤姆，你太懒惰了，这项工作本来应该昨天就做完的。 Look, Tom is crying. I shouldnt have been so harsh on him. 看，汤姆哭了，我本来

9、不应该对他如此严厉。 “should+have+done”意思是“本 来应该做某事，而实际没做。” shouldnt+have+done”表示本来不 应该做某事，而实际做了。含有指责 对方或自责的含意。 It must have rained last night, for the ground is wet. 昨晚一定下雨了，因为地面还是湿的。 “must+have+done”表示对过去事情 的肯定推测，译成“一定做过某事”， 该结构只用于肯定句。 Mr. Smith cant have gone to Beijing, for I saw him in the library just n

10、ow. 史密斯先生不可能去北京了，我刚才还在图书馆见过他。 There is no light in the room. Can they have gone out? 屋里没有灯，他们可能出去了吗？ cant+have+done”表示对过去事情的否定 推测，译成“不可能做过某事”。 “can+have+done”表示对过去行为的怀疑， 用于疑问句，译成“可能做过吗？” He could have passed the exam, but he was too careless. 本来他能够通过考试，但是他太粗心。 “could+have+done”是虚拟语气， 表示对过去事情的假设，意思是本 来能够做某事而没有做。 I would have told you all about the boys story, but you didnt ask me. 我本来会告诉你这个小男孩的故事，但是你没有问我。 “would+have+done”虚拟语气，表示对过去 事情的假设，意思是“本来会做” THE ENDTHE END