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() 1.How can we cross the road ?
A.safe
B.safety
C.safely
A.safe
B.safety
C.safely
答案
C
解析
题干中需要修饰动词“cross”，应使用副词形式。“safe”是形容词，“safety”是名词，“safely”是副词，因此选择C选项。
() 2.—What must we in the classroom? —We mustn't shout.
A.do
B.not to do
C.not do
A.do
B.not to do
C.not do
答案
C
解析
must是情态动词，后接动词原形。根据答句“We mustn't shout.”可知问句询问“我们在教室里禁止做什么”，“mustn't do sth.”表示“禁止做某事”，所以问句用“must...not do”。A选项“do”不符合答句否定含义；B选项“not to do”中“to do”多余，情态动词后直接接动词原形。
() 3.Here's the red man. You stop now.
A.must
B.can't
C.mustn't
A.must
B.can't
C.mustn't
答案
A
解析
根据“red man”（红灯）可知，此时必须停下。“must”表示“必须”，符合交通规则。“can't”意为“不能”，“mustn't”意为“禁止”，均不符合语境。
() 4.If you find a zebra crossing, you can cross other people.
A.must; and
B.mustn't; with
C.can't; with
A.must; and
B.mustn't; with
C.can't; with
答案
C
解析
根据Unit 4 Road safety内容，关于过马路安全，若找不到斑马线，应和他人一起过。"can't"表示“不能，找不到”，"with"表示“和……一起”，符合语境。A选项“must”（必须）和“and”（和）逻辑不符；B选项“mustn't”（禁止）不符合题意。
以“Road safety”为题，说一说，写一写。
We mustn't on the road.
We mustn't on the road.
We mustn't on the road.
We mustn't on the road.
We mustn't on the road.
We mustn't on the road.
答案
We mustn't play on the road.
We mustn't run on the road.
We mustn't cross the road carelessly.
We mustn't run on the road.
We mustn't cross the road carelessly.
1. 看课本第 40 页的图，尝试和同伴进行互动游戏。
答案
答案略
2. 读一读，选择与图片相符的句子，填序号。
(1)
(2)
(3)
(4)
() () () ()
A. We must not play on the road.
B. We must wait on the pavement and look out for cars and bikes.
C. You can also cross the road with other people.
D. You should look at the traffic lights and wait for the green light.
(1)
(2)
(3)
(4)
() () () ()
A. We must not play on the road.
B. We must wait on the pavement and look out for cars and bikes.
C. You can also cross the road with other people.
D. You should look at the traffic lights and wait for the green light.
答案
(1) C
(2) A
(3) D
(4) B
(2) A
(3) D
(4) B
1. 与同伴问答“What must/mustn't we do on the road?”
答案
- Q: What must we do on the road? A: We must look left and right before crossing the road. We must walk on the zebra crossing. We must follow the traffic lights.
Q: What mustn't we do on the road? A: We mustn't run on the road. We mustn't play on the road. We mustn't cross the road when the light is red.
Q: What mustn't we do on the road? A: We mustn't run on the road. We mustn't play on the road. We mustn't cross the road when the light is red.
2. 根据首字母提示完成句子。
(1) To have a healthy d, we m eat a lot of sweets.
(2) The child is running on the r. It is not s.
(3) My sister n goes to bed late.
(4) We must look for a zebra c. Then look at the traffic l.
(1) To have a healthy d, we m eat a lot of sweets.
(2) The child is running on the r. It is not s.
(3) My sister n goes to bed late.
(4) We must look for a zebra c. Then look at the traffic l.
答案
(1) diet; mustn't (2) road; safe (3) never (4) crossing; lights
解析
(1) 第一空根据"healthy"和首字母d，填diet；第二空根据"have a healthy diet"及常识，应是"不应该"吃太多糖，填mustn't。
(2) 第一空"running on the..."结合首字母r，填road；第二空描述在马路上跑的性质，填safe。
(3) 根据"goes to bed late"及首字母n，填never。
(4) 第一空"zebra..."是固定搭配zebra crossing；第二空"traffic..."是traffic lights。
(2) 第一空"running on the..."结合首字母r，填road；第二空描述在马路上跑的性质，填safe。
(3) 根据"goes to bed late"及首字母n，填never。
(4) 第一空"zebra..."是固定搭配zebra crossing；第二空"traffic..."是traffic lights。
