Learning about Language优秀教案

Book 8 Unit3 Learning about language 过去分词作状语

【教材与学情分析】该部分语法内容在必修课本中已经出现过，在选修课本中出现是作为复习。对于过去分词的使用，学生们已经有所了解和认知，但是很多同学还有盲点，尤其在语境中，学生们对三中非谓语动词的还是会混淆。

【教学目标】熟练掌握过去分词作状语的用法

【教学重难点】和现在分词作状语时的区别

【教学过程】

一．导入

经典例句（含图片）展示

Once spoken, a word becomes a promise. 一言既出，驷马难追。

Once poured, water cannot be taken back again. 覆水难收。

Impressed by the beautiful scenery, I forgot to go back home in time. 流连忘返。

二．过去分词作状语的基本用法：

1. 过去分词与句子主语之间构成

被动

关系。

2. 过去分词的逻辑主语就是主句的主语。

3. 可置于主句前，也可置于主句后，用逗号与主句隔开。

4. 过去分词通常在句中充当以下几种状语：

①Asked what had happened, he kept silent. （时间）

②Choked by the heavy smoke, he could hardly breathe. （原因）

③Given more time, we would be able to do the work much better. （条件）

④Left alone at home, the little boy didn’t feel afraid at all. （让步）

⑤ The old man went into the room, supported by his wife. （伴随或方式）

（让学生说出过去分词的逻辑主语在哪里）

5.过去分词+连词

过去分词作状语，常常可以在过去分词前加连词（when, if, though, once 等），以起到强调的作用，使句意更加明确。

6. 过去分词状语，相当于一个状语从句。

（伴随状语相当于一个并列句）

练习：Rewrite the sentences, using the past participle as the adverbial. 1）. Because it was done in a hurry, his homework was full of mistakes.

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Done in a hurry, his homework was full of mistakes. 2）. If it is taken according to the instructions, the medicine has no side effect. Taken according to the instructions, the medicine has no side effect. 3）. Though he was defeated by the young player for the second time, he didn’t lose heart. Defeated by the young player for the second time, he didn’t lose heart. 三．过去分词的重难点辨析。

比一比，变一变：

We followed the old man, and we went upstairs. =Following the old man, we went upstairs. We were followed by the old man, and we went upstairs. =Followed by the old man, we went upstairs.

考察重点：

有些过去分词因来源于系表结构，作状语时

不表被动而表主语的状态。

常见的有：

lost (迷路); seated (坐); hidden (躲);

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lost / absorbed in (沉溺于); born (出身于); dressed in (穿着)； tired of （

厌倦于）；

worried about （担心

）； based on （基于）；

devoted to / buried in（专心于）

Lost / Absorbed in deep thought, he didn't hear the sound. 四．练习

Practice makes perfect. 1)

.他在屋子时走来走去，陷入了沉思。He walked up and down the room, ________________. 2)

训练员出现了，后面跟着四条小狗。 The trainer appeared, _____________________. 3)

如果给我一台时间机，我将会去未来看看。

___________________________, I will pay a visit to the future. 【教学反思】学生每次在上语法课的时候觉得自己听明白了，但是在做题的时候还是会出错，主要原因不是语法项目不清楚，而是对单词词义的掌握不足，影响了对句句意的判断。因此语法讲解时要侧重语义和语境，平时的教学要进一步加强单词的被动，句意的理解。

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