Unit 2 Healthy eating

河南省淮阳县实验高中教案

主备教师： 冯 坤 二次备课教师： 编号： 13

课 题：Unit 2 Healthy eating

Period 6 Grammar---modal verbs

教学目标：Enable students to use modal verbs correctly and properly.

教学重点：Get students to learn and master the use of ought to, “modal verbs + have done”.

教学难点：Enable students to use modal verbs correctly and properly according to the context.

教学方法：Task- based teaching and the integral teaching method 教学过程：

二次备课 【自研课导学】

1. Get students to know the characters of modal verbs.

2. Let students learn the use of ought to, “modal verbs + have done”. 【展示课导学】

1. Modal verbs（情态动词）----ought/ought to的用法

用法 例句 Ought无人称和时态的变化，后接带(1) There’s something I ought to tell to的动词不定式。Ought to可表示“义you before you leave. 务”、“要求”、“劝告”，常译作(2) He ought not to do that. “应该”、“应当”等（和should(3) ---Ought he to see the doctor? 差不多，只是语气稍重一些）；有时---Yes, he ought to. 表示“非常可能”的意思，否定式为(4) If she is completely well, she ought ought not to (oughtn’t to)，疑问式为ought I/you to „„？ to be back at school toady. 2. 情态动词+have done的用法: 1)、“must + have + 过去分词”：表示对过去发生的事情或状态进行推测，语

气比较坚定，通常只用于肯定句。

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河南省淮阳县实验高中 高一英语组

如：It must have rained last night, for the ground is wet.

You must have been mad to speak to the servant.

2)、“can / could + have + 过去分词”：表示对过去某种情况的怀疑或不确定。can和could一般用于否定句和疑问句，could的语气较can弱。 如：I didn't see her at the meeting this morning;

She can't / couldn't have spoken at the meeting. He can't have finished the work so soon.

3)、“may / might + have + 过去分词”：表示对已发生的动作或存在的状态进行不肯定的推测，might的语气比may弱一点。这种结构主要用于肯定句和否定句，疑问句改用can或could。 如：They may not have known it beforehand.

You might have read about it in the papers.

4)、“need + have + 过去分词”：表示过去做了不必做或不需要做的事情，或过去做某事纯属多余。

如：Need they have done it last week?

I needn't have bought so much wine—only five people came.

5）、“should / ought to + have + 过去分词”：表示过去本该做某事但没做，其

否定式表示过去不该做某事但做了，这种句式含有不满或责备之意，ought to的语气比should强一些。

如：You ought to / should have studied harder. 你本应该更努力学习的。（但没有） He oughtn't to / shouldn't have done that. 他本来就不该做那件事。（但做了） 6）、“would ＋ have ＋ 过去分词”：表示对过去的某种情况进行猜测，或本来

要做某事却因某种原因未做成，通常用来说明某一情况，但不像用should或ought to那样含有责备之意。

如：I guess the poet would have been about twenty when she wrote her first poem.

Another worker wouldn't have acted like that. 当堂检测

二次备课 1. But for the help of my English teacher, I _____the first prize in the English Writing Competition.

A. would not win B. would not have won

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河南省淮阳县实验高中 高一英语组

C. would win D. would have won

2. He did not regret saying what he did but felt that he _____ it differently. A. could express B. would express

C. could have expressed D. must have expressed 3. What a pity! Considering his ability and experience， he _____better. A. need have done B. must have done C. can have done D. might have done 4.—Catherine，I have cleaned the room for you. —Thanks. You it. I could manage it myself. A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done

5. I was really anxious about you. You ___ home without a word. A. mustn't leave B. shouldn't have left C. couldn't have left D. needn't leave

【教学反思】

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二次备课 【板书设计】