高一英语情态动词教案2

高一英语情态动词教案2
高一英语情态动词教案2

情态动词

情态动词是高考的重点考查项目,对学习情态动词的要求是:

首先、了解情态动词各自的基本意义及用法,然后掌握情态动词表示推测的用法(其中重点是对表过去推测的用法)还要注意带有情态动词的反意疑问句的用法。

情态动词的特征:

1.本身有词义,但完全。因此不能独立作谓语,只能和动词原形一起构成谓语。

2.后接动词不定式一律不带to

3.不随人称和数的变化。

情态动词各自的基本意义及用法

表一、can 与could用法对比表

表二、may与might用法对比表

表三、must与have to的用法对比表

表四、need与dare的用法对比表

表五、should与ought to用法对比表

表七:used to与would用法对比表

情态动词表推测的意义:

1、大多数情态动词(除表‘能力、许可、意志’外),都可以表示推测,其程度有差异。按其可能性程度的高低排列为:

Must﹥will ﹥would ﹥ought to ﹥should ﹥can ﹥could﹥may ﹥might

肯定完全可能很可能可能有可能

2.注意区分情态动词的否定的含义:

may not或许不、可能不might not可能不can’t 不可能

mustn’t不许、禁止shouldn’t不应该needn’t 不必

3.情态动词表推测具体运用:情态动词可以对现在、进行、过去推测

情态动词表推测的反意疑问句

情态动词表推测的反意疑问句,简单来说,就是以情态动词后的时态为淮,如句子里有明确的时间状语,则以其为准。以must 为例:

eg. 1. Y ou must be hungry now, aren’t you?

2. He must be watching TV , isn’t he ?

3 Tom must have lived her for a long time, hasn’t he ?

4. She must have arrived yesterday, didn’t she?

注:如选择题中(以She must have arrived yesterday, didn’t she?为例)既有didn’t she又有hasn’t she 则以didn’t she?为最佳答案。

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