Unit4 Grammar 情态动词 知识点详解课件-2021-2022学年高中英语牛津译林版（2020）必修第二册

Grammar and usage Model Verbs 1．—Honestly speaking, I don’t think I’m going to get the offer. —Well, you never know! You _______________ (make) a better impression than you think. (所给词的适当形式填空) may have made 情态动词知识检测 2．To all the people who have come to my help, I ________ thank you enough for your kindness to me and I will keep it in mind for the rest of my life. (用适当的词填空) can’t 3．“ The profit ________ be divided into three parts, according to the agreement made by both sides,” declared the judge. （用适当的词填空） shall 4．I'm not sure of the reason for the dog's illness, but it ________________________ (cause) by eating too much. （所给词的适当形式填空） may have been caused 5．When I was a little child, my grandma ________ read me stories almost every night. （用适当的词填空） would 6．Why __________ you choose to work in a remote mountain village when you can have a respectable job in a big city? （用适当的词填空） must 7．You________not have prepared breakfast so early. I don't have to go to school today.(用适当的单词填空) need 情态动词 1. 情态动词本身有一定的词义，通常与动词原形一起构成谓语，表示说话人的看法或主观设想。常见的情态动词有：can、could、may、might、must、ought to、shall、should、will 和 would。另外，dare、need、have to 和 used to 也具有情态动词的某些特性。 2 can 与 could 表示能力（ability），意思相当于 be able to。如：Jack can swim. My father could stand on his hands when he was young. 注意：在一般过去时中，was / were able to 通常表示能做并且已经做了的事，could 仅表示能力。 如：I was able to swim to the bank when the ship sank. I could lift the heavy box. 3 must 与 need 表示必要性（necessity）。must 意为“必须”，否定式 mustn’t 意为“不许”；need 意为“需要”，否定式 needn’t 意为“不必”。如： I must go now. You mustn’t forget your ticket. Need we go right now? You needn’t do it if you don’t want to. 注意：have to 也有“必须”的含义，但侧重客观需求，有时态的变化，否定式是 don’t / doesn’t have to，意为“不必”，意思相当于 needn’t。如： We will have to think of a new plan. You don’t have to run. 4 can、could、may 与 might 表示许可（permission）。表示许可时，may 多用于正式场合，could 和 might 的语气更委婉些。如： You can use my pen if you like. Students may not bring their pet