公开课人教版七年级下册unit4祈使句PPT课件

PK See which group can say the most class rules.
Rules of Class 11
1. _______________
2. _______________
3. _______________
4. ________________
5. ________________
No swimming!
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Task 1: Write the rules for the school library.
Library Rules
1. Don’t talk.
2. _D_o_n_’t_l_is_t_en__to__m_u_s_ic_.
3. _D_o_n_’t_e_a_t_o_r_d_r_in_k_.__
Listen to me carefully. Sit down, please!
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Read and observe(观察)
Clean the blackboard.
Stand up! Listen to me carefully.
Don't be late for class. Don't eat in the classroom. Don't run in the hallways.
Don't eat in class.
Don't fight.
Don't draw on the wall.
school rules
Don't talk.
Don't play sports in the classroom.
Don't listen to music in
class.
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Imperative Sentence
1.主语通常为you,但常省略。
2.谓语动词一律用原形。
3.句末根据语气的强弱用感叹号或句号。
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Game: I say, you do
Please open the door. Clean the blackboard.
Turn to Page 21. Ms. Chen says
Stand up!
Be quiet.
signs
Turn right!
Go downstairs!
Go upstairs！
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2.祈使句的否定式
“三兄弟”
(1). Do型和Be型的否定式是在句首加don’t。
e.g. Don’t sit here. 不要坐在这儿。 Don’t be late. 别迟到。
(2). 以let开头的祈使句，其否定式有两种： 一种是直接在句首加don’t，
Imperative Sentence
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How to be a good student?
What can we do at school or in the classroom?
What can’t we do?
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Don't sleep in class.
Don't arrive late for class
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注意： 有时可在祈使句的句首或句尾加上 please，使语气显得客气、有礼貌。如 果在句尾加please，应该用逗号与前句 隔开。 e.g. Go this way, please. 请这边走。
Please go this way.
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三.祈使句的形式
1.祈使句的肯定式
“三姐妹”
(1). 以行为动词原形开头，简称Do型。 e.g. Come here.
4. _D_o_n_’_t _ta_k_e_p_h_o_t_o_s.__
方法指导：
1. 由图示可知都是一些禁止类的祈使句。
2. 可知应用祈使句. 的否定形式。
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Task 2 If you are the headteacher(班主任),
discuss and make rules for our class.
一.祈使句的概念
祈使句是表示请求、命令、 建议或劝告等的句子。
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二.祈使句的特点
We clean the classroom every day.
He usually goes to the library on weekends.
Don't arrive late for class. Sit down, please!
Turn to Page 21.
Don't fight.
Sit down, please!
Don't sleep in class.
Please open the door. Don't wear a hat in class.
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Draw the conclusion (得出结论)
祈使句的结构如下： 肯定： (Please) + Do sth. 否定： (Please) + Don’t do sth.
... .
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Rules of Cass 11
1. D__o_n_'t__b_e_l_a_te__fo_r__c_la_s_s_. ________________
2. D__o_n_’_t _e_a_t_o_r_d_r_i_n_k_i_n__th_e__c_la_s_s_r_o_o_m_._____
3. D__o_n_’_t _r_u_n_i_n__th_e__h_a_ll_w_a_y_s_._____________
(2). 以动词be开头，简称Be型。
e.g. Be quiet, please.
Be kind to your classmates.
(3). 以Let开头，简称Let型。
e.g. Let’s go!
Let's play basketball after school.
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Turn left!
No swimming！ 禁止游泳！
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Guessing Game
Don’t park your car. No parking!
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Don’t smoke! No smoking!
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Guessing Game
Don’t take photos! Don’t swim here!
No photos!
另一种是“let + 宾语 + not +动词原形+ (其他)”。
e.g. Don’t let him go. 不要让他走。 Let’s not go there. 咱们别去那儿。
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注意：
(3)“N常用于公共场所。
e.g. No photos!
禁止拍照！