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We should …
We shouldn’t …
Good manners in the library
We should …
We shouldn’t …
We should behave politely in public.
We should obey public rules.
We should pay attention to public signs.
adj. 公共的
注意到
Public signs
What’s the sign?
What does it mean?
No smoking.
It warns us not to smoke here.
v. 警告，告诫
Public signs
What’s the sign?
What does it mean?
No photos.
It warns us not to take photos here.
Public signs
What’s the sign?
What does it mean?
No parking.
It warns us not to park cars here.
v. 停车
Public signs
What’s the sign?
What does it mean?