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How can we do well （表现好）in public places ？
Love ，
Lily
How can we cross the road safely?
Let’s review！
You can look through (浏览）story time and look at the pictures to find the answers.
What must we not do on the road?
Let’s review！
We must look for a zebra crossing,
We must look at the traffic lights
We must wait for the green man.
We can wait on the pavement.
We can cross the road with other people。
We mustn't run or play on the road.
Let’s read！
You must look for a zebra crossing.
You must look at the traffic lights.
What must you not do on the road?
You mustn’t play football on the road.
You mustn’t run on the road.
情态动词
动词原形
Tip: must 表示“必须”，
mustn’t=must not 表示“禁止”有很强的劝告语气。
You can wait on the pavement.
You can cross the road with other people.
You can’t cross the road here.
Tip: can 表示“可以”，有能力或有权利做某事，
can’t=can not 表示“不能”。
must 表示“必须”，