6A U5 补充材料
No doing. = Don’t do.
No littering.= Don’t litter.
No eating or drinking.= Don’t eat or drink.
It means ‘Be quiet’.
It means you should be quiet.
It means you shouldn’t / can’t speak loudly.
It means ‘Danger’(危险). It means it’s dangerous(危险的) here.
It means you should be careful.
It means you shouldn’t / can’t go there.
2. mean 动词(意味着)： What does this sign mean? It means ‘Danger’.
These signs mean different things.
meaning 名词(意思/含义)：These signs have different meanings.
Do you know the meaning of this word?
3. smoke 不可数名词(烟)： Can you see the smoke from the house? Is it on fire(着火)?
动词(抽烟)： Does your father smoke? Yes, he smokes a lot.