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1、What are these?标志They are signs.Public公共的Different signs mean different things.What do they mean? 表示What does it mean?It means “No smoking”.What does it mean?It means “No eating or drinking”.What does it mean?It means “No parking”.What does it mean?It means “No littering”.What does it mean?It means
2、“Be quiet”.It means “Danger”.What does it mean?It means “Do not touch”.What does it mean?It means “Keep off the grass”.What does it mean?情景对话:A: What does this sign mean?B: It means you shouldnt climb the tree.A: What does this sign mean?B: It means you shouldnt .It means you shouldnt walk on the grass.It means you shouldnt take photos.It means you shouldnt touch it.1.no后面接动词+ing,如:no smoking(原形 smoke)2.not后面接动词原形,如:do not touch(原形)3.should后面接动词原形,如:you shouldnt walk (原形 ) on the grass. 小知识：
