初中英语情态动词课件.doc

1 初中英语情态动词课件篇一:初中英语情态动词讲解_ 练习及答案情态动词一、考点、热点回顾【词汇辨析】 1. sometimes/ some times/sometime/ some time: sometimes: “有时”=at times. He is sometimes late for school. some times: “几次”I have been to Nanjing some times. sometime: “某一时刻”I bought it sometime last spring. We ’ ll meet again sometime next week. some time: “一段时间” We have to stay here for some time. 2. many/ much/ a few/ a little/ few/ little (1)many 修饰可数名词, much 修饰不可数名词; 都表示许多。例如: 许多书许多牛奶(2)a few 和a little 都表示有一点儿, 侧重于肯定,相当于 some ,但 a few 修饰可数名词, a little 修饰不可数名词,例如: 2 He has a few friends in London. ---Would you like some coffee? ---Yes, just a little. (3)few 和 little 表示几乎没有,侧重否定。 few 后接可数名词, little 后接不可数名词。例如: He isa strange man. He has few words. Hurry up, there is little time left. 【固定搭配】加-ing be busy doing sth. 忙于做?? eg: Mother is busy cooking. look forward to+ doing sth. 期待做?? eg: Tom looks forward to seeing his father again. Thank you for (doing) sth. 为了? 感谢你 eg: Thank you for your help. 愉快地做某事 eg: I had great fun playing in the water. =have a good time doing sth eg: I had a good time playing in the water. 做某事有困难 eg: I have difficulty finishing my homework in2 hours. 【情态动词】又叫情态助动词。它们具有以下特点: ⑴它们必须与其他动词连用,即:情态动词+动词原形表示说话人对所述动作的看法, 如需要、可能、意愿或怀疑等。 3 ⑵绝大多数情态动词没有人称和数的变化,即第三人称单数不加-s (以 be和 have 开头的情态动词短语除外)。⑶在意义上,情态动词具有“多义性”。例: can 既可表示能力,又可表示可能、允许等意义。【情态动词的基本用法】 1. can 的基本用法: ⑴表示体力或智力上的能力,即“能够,会”, 可与 be able to 转换。例: He can speak English. = He is able to speak English. — Can you play basketball? — No, I can ’ t. 如果表示将来具备的能力,要用 will be able to。例: IfI have a good sleep, I will be able to do the problem. ⑵表示许可,主要用于口语,书面语一般用 may 。例: — Can we go home now, please? — No, you can ’ t. You can only smoke in this room. You can ’t keep the library books for more than a month. ⑶表示“可能”,与 may 同义,但一般用在疑问句中。例: What can he possibly want? 在否定句中,否定形式 can ’t 表示推测“不大可能”。 4 例: Anybody can make mistakes. The news can ’t be true. 与第一、二人称连用时, 还可以就可能的解决问题的方式或可能的行为提出建议。在这里,也可用 could 使语气婉转。例: Can / Could we meet again next week? 下周我们可以再见面吗? —