Unit4 Don ’t eat in class （Section A ） 祈使句的用法 库庄一中 孙静文
Grammar 祈使句的定义是表示请求、命令、叮嘱、禁止、 劝告等的句子。它的特点是通常省略主语you， 以动词原形为开头，句末则用句号或感叹号。 e.g. 1.Do型（动词原形+宾语+其他） Go and wash your hands！去洗你的手！（命令） 2.Be 型（be+表语+其他） Be quiet， please! ！请安静！（请求） 3.let型（Let+宾语+动词原形+其他） Let me help you.让我来帮助你吧（劝告）
火眼金睛辨真伪
火眼金睛辨真伪
火眼金睛辨真伪
火眼金睛辨真伪
否定的祈使句是在动词前(即句首)加Don't. e.g. Don't talk in class! 不要在课常上讲话！ Don't be late for class. 上课别迟到 ! Don't let him go! 别让他走! 注：有些可用no开头，用来表示禁止性的祈使句 e.g. No smoking! (禁止吸烟！)
Don’t run in the hallways. What are the rules at your school? Don’t run in the hallways.
Don’t eat in the classroom. You must eat in the dining hall. What are the rules at your school? Don’t eat in the classroom. You must eat in the dining hall.
What are the rules at your school? Don’t fight. 不准打架.
What are the rules at your school? Don’t arrive late for class. You must be on time. 不准上课迟到.必须准时
Don’t listen to music in the classroom. What are the rules at your school? Don’t listen to music in the classroom. 不要在教室里听音乐
2. listen 的用法； 1) listen 不及物动词，听；用来提醒某人注意，后面不跟事物。 Listen! Who’s singing in the classroom? 听！谁在教室里唱歌？ 2) 如果后面跟要听的事物，应跟介词to再跟事物。 Listen to our teacher carefully. 认真听老师讲。
Ⅱ. 按要求完成下列句子。 1. Sit down.（改为否定句） 2.We should (listen)the teacher carefully!（适当形式填空） 3.不要在河里游泳。(翻译句子) Don't sit down. listen to Don't swim in the river.
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