广西接力版四年级下册小学英语 lesson 9 be careful!课件

1、Lesson 9Be careful!Guessing GameKeep slience!Be quiet!Guessing GameDont smoke!No smoking!Guessing GameDont play football!Guessing GameNo parking！Guessing GameDont eat!Guessing GameDont pick the flowers!祈使句 : 是表示请求、命令、建议等句子，通常说话的对象是第二人称you, you常被省略。定义Read and observe(观察)Be quiet！Be careful! Be clean!

2、Keep slience!Stand up!Come in!祈使句的句型： Be + 形容词！ 动词原形 + 其他！变否定直接把Dont 放到句首！Dont be late! Dont smoke!Be ! Its dangerous.Dont the tree.Dont the wire. Its dangerous.Its dangerous. Dont run !Dont . Its dangerous.climb, careful, play with fire, touch ,downstairsBe careful ! Its dangerous.Dont climb the tr

3、ee.Dont touch the wire.(电线)Dont run downstairs !Dont play with fire . Its dangerous.climb, careful, play with fire, touch ,downstairsBe careful, be careful.Dont run downstairs.Its dangerous.Dont climb the window.Its dangerous.Dont play with fire.Its dangerous.Be careful, be careful.祈使句之“否定”凡是以行为动词开头

4、的祈使句，一律在行为动词前加dont。- Drink the water, please. - Dont drink the water, please.Dont talk, please.Im sorry.Thats all right.%! Wow Dont walk on the grass.Im sorry.Thats all right.Dont smoke on the farm.Im sorry.Thats all right.Dont go fishing, please.Im sorry. Thats all right.Practice timeDontDontDontDontDont pick the flower!Dont pick the oranges!Dont touch the dog!Dont climb the tree!Practice timeDontDont climb the tree! Dont touch the dog!