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重庆大学版（必修）英语5二年级《Theme B Society and Nature Our Planet Unit 4 Living Planet Grammar》优秀教案设计
2. Lean to draw a conclusion by studying example sentences.
3. Learn to apply the rules.
重难点：
1. Learn the rules of the past participle as the predicative and object complement.
2. Lean to draw a conclusion by studying example sentences.
导入示标：
Review the functions of the past participle as the attribute and the adverbial
教学步骤：
I. read some examples or sentences:
Read the sentences carefully, pay attention to the colored parts, and then divide them into two groups.
Tell the reasons for your classification.
Explain what the predicative is and what the object complement is.
II. analyze the following examples or sentences.
Study the examples carefully and then tick out the correct answers.
Observe the examples and features and try to draw a conclusion.
Conclusion as follows:
A. 过去分词可放在系动词be, get, feel, remain, seem, look, become等之后作表语，表示主语所处的状态。
When I got to the classroom, the door was locked.
B. 过去分词作表语（系表结构）与被动语态的区别
“be+过去分词”表示状态时，是系表结构，其后面通常不加by短语，此时分词通常已形容词化；表示动作时，是被动语态，且被动结构中的动作执行者由介词by引出。
My glasses are broken. 我的眼镜碎了。（系表结构，强调状态）
My glasses were broken by my son. 我的眼镜被我儿子摔碎了。（被动语态，强调动作）
C. 过去分词作宾语补足语表示的语法含义是“被动和完成”。考查主要体现在以下几个方面：
过去分词在have, make, get, keep, leave等使役动词的宾语后面充当宾语补足语。
She raised her voice to make herself heard by all the people in the hall.