Learning about Languageppt配用优秀获奖教案

高中英语人教版必修2

Unit3 Computers 《Learning about Language》

1教学目标

1.

Learn

the

Present

Perfect

Passive

Voice. 2.

Help

the

students

master

the

way

of

using

the Present

Perfect

Passive

voice,telling

the

differences

between

the

active

voice

and

the

passive

voice. 2学情分析

本单元的话题是Computers,介绍计算机的发展历程和现代电脑的工作原理。“现在完成被动式”是本单元的句法项目。进一步培养良好的行为习惯和学习习惯。

3重点难点

句法训练

第一部分学习和掌握

“现在完成时的被动式”的基本构成

第二部分现在完成时态的被动语态实际应用和操作训练。

4教学过程

4.1第一学时

4.1.1教学活动

活动1【导入】Lead－in

Say:Can you pick out more than two sentences just like examples from the reading passage?

Ask

the

Ss

to

discover

whether

these

sentences

have

something

in

common.Help

them

to

learn

the

useful

structure

:

the

Present

Perfect

Passive

Voice.

通过提问的方式导入新课，让学生通过上述问题去思考、讨论、合作探究等学习方式来寻找答案。

活动2

（讲解法）

让学生观察找出来的句子，注意黑体部分，并总结其结构：have/ has been done，由此引出本节课的重点：

The Present Perfect Passive Voice现在完成时的被动语态

Sentence structure: subject + have/has +been+ done

Discussion

:

learning

the

structure Give

some

explanations 1.构成:

主动语态 被动语态

现在完时 have/has

done----------have/has

been

done 肯定句式：His bike has already been repaired. 否定句式：His bike hasn`t been repaired yet. 一般疑问句：Have/Has提到主语的前面。Has his bike been repaired? 特殊疑问句：特殊疑问词+have/has+been+done?

Who has

been repaired his bike? 2.主动语态变被动语态:

(1)把原来的宾语提到前面作被动语态的主语;

(2)把谓语动词变成被动结构(be＋过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来决定be的形式)。

(3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。

在老师的指引下，让学生自己发现和总结语法结构，培养学生分析问题，归纳问题的能力，也加深了学生对语法结构的印象。

活动3Analysis(分析)

在学生熟悉了这个语法结构之后，趁热打铁，让学生分析句子成分和主动语态与被动语态的相互转化等。

The

teacher has borrowed the books

动作的执行者

谓语动词

动作的承受者

The books have beenborrowed by the teacher. 然后用图片让学生将句子转化为被动语态。具体做法是在屏幕上展示学生班主任发给家长信息的图片。接着完成课本P21 (2)用现在完成时被动语态改写句子，以竞赛的形式回答。最后把答案呈现在屏幕上。

1.A new personal computer has been bought by my friend. 2.My computer has been repaired by the shop very quickly.

3.My computer has just been attacked by an unknown virus. 4.The problem has not been solved by us yet. 5.The computers have been given away to a local school by the company. 6.A kind of intelligent robot has been developed by the scientists. 活动4 Challenge yourself !(挑战自我！) 在此基础上，我问他们是否愿意尝试更具挑战性的题目，学生们跃跃欲试。通过小组合作的方式每一个组都选lucky number、每一个幸运号里有不同难度的题型，让学生通过小组合作的方式完成任务。当这些题型展现出来后，同学们就热情高涨。此项活动激发了学生学习英语的兴趣，活跃了课堂气氛，同时我们学习的语法项目也得到了巩固. Summary 活动51.现在完成时态的被动语态结构

2.注意be动词的单复数形式

3.主变被步骤

【作业】Homework Write a short passage using the present perfect passive voice.