第53页 - 课课练小学英语六年级译林版

policeman

rules

carefully

road

street

look

right

green

quickly

play

tops

raffic

eep

ustn't

rivers

ules

can't/mustn't/shouldn't walk

in the library/on the metro/in a bookshop

we can't/mustn't/shouldn't eat or drink there

作业精灵老师示例：

In the park,we can go boating and have a picnic.

We must follow the rules.We can't ride a bike or fly a

kite.We mustn't pick flowers or smoke.We also can't

play volleyball.