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课件网) Unit 7 Ways to be healthy Grammar Learning objectives In this lesson, we will be able to: 1. Recognize and identify imperative sentences in different contexts, such as instructions, warnings, and invitations. 2. Improve ability to observe, analyze, and summarize the characteristics of imperative sentences. 3. Develop an interest in English language and culture, and understand how language functions in different social situations by experiencing the practical application of imperative sentences in daily life. 祈使句 祈使句是英语的基本句型之一。 用于表达命令、请求、劝告、警告、禁止等。 一般没有主语,实际上是省略了主语"You"。 一般动词原形开头，没有时态和数的变化。 句末用感叹号或句号,用降调朗读。 祈使句的五种句型结构 动词原形前+do可加强语气。Do stop talking. (1)肯定形式:实义动词原形(+宾语+其他). 1、stand up(起立。) 2、Sit down.(坐下。) 3、Go away!(滚开!) 4、Come back.(回来） 实义动词原形+副词 第一种:Do型祈使句 5、Listen!(听。) 6、Look!(瞧!看!) 单个实义动词原形 7、Open the door lightly, please. (请轻轻地打开门。) 8、 Read the newspaper carefully. (仔细阅读这份报纸。) 实义动词原形+宾语+其他成分 第一种:Do型祈使句 (2)否定形式:Don't/Never+实义动词原形(+宾语+其他). Don't run in the street. Never do that again. Please don't get angry. (不要在大街上乱跑。) (再也不要这么做了。) (请不要生气。) 若句首有please,则在此后加don’t。 第二种:Be型祈使句 (1)肯定形式:Be+表语(+其他). Be careful!(小心) Be quiet!(安静!) Be+表语 Be a good boy, please.(请做个乖孩子。) Be+表语+其他 (2)否定形式:Don't/Never+be+表语(+其他). Don't be late for school. Never be late for school. (不要上学迟到。) (上学绝不可迟到。) 第三种:Let型祈使句 (1)肯定形式:Let+宾语+动词原形(+其他). 让她乘公交车去那儿。 Let her go there by bus. 咱们今天晚上看电影吧。 Let's see a film tonight. (2)否定形式: Don’t+let+宾语+动词原形(+其他). 或者:Let +宾语+not+动词原形(+其他). 不要让他今天早上出去。 Don't let him go out this morning. 咱们不要过量吃垃圾食物。 Let's not eat junk food too much. 第四种:No型祈使句 (1) No+名词. No photos!(禁止拍照!) (2)No+动名词. No smoking!(禁止吸烟!) 第五种:无动词祈使句 主要是以形容词、副词、名词构成的祈使句。 Careful! Quickly! (小心!) (快点吧!) 补充→句型转换 祈使句与陈述句的句型转换 祈使句=You must …(陈述句) Come here .过来。 =You must come here .你必须过来。 祈使句口诀： 祈使句无主语，主语you常省去; 动词原形谓语当，句首加don’t否定变; 朗读应当用降调，句末常标感叹号。 一.单项选择题 A _____ quiet in the library. A. Keep B. To keep C. Keeping D. Kept 2._____ play football in the street. It's dangerous. A. Don’t B. Not C. No D. Doesn’t 3._____ me the book, please. A. Show B. Shows C. Showing D. To show 4._____ late for school again, Tom. A. Don't be B. Be not C. Not be D. Don't A A A 二、根据动词的适当形式填空 _____(not be) late for class. 2._____(clean) your room every day. 3._____(let) us go to the park. 4._____(not run) in the hallways. Don't be Clean Let Don't run 三、英汉互译 请安静。 2.不要吃太多垃圾食品。 3.Close th ... ...
