Unit 4 Road safety Story time Grammar time课件（22张PPT)

(共22张PPT)
Unit 4 Road safety
Lesson 1 Story time
a pavement
a zebra crossing
斑马线
人行道
a road
马路
Let’s learn words
eg.Someone is standing in the middle of the road. 有人正站在马路中央。
eg.There is a zebra crossing on the road. 马路上有一条斑马线。
eg.We should walk on the pavement. 我们应该在人行道上行走。
traffic lights
red man
green man
绿灯
红灯
交通灯
Let’s learn words
eg.We need to turn left at the traffic light. 我们需要在交通灯处左转。
eg.Stop! There is the red man. 停！是红灯。
eg.You must wait for the green man. 你必须等绿灯。
Let’s watch the video.
Road safety
There are many busy roads in the city. How can you cross them safely
First, you must look for a zebra crossing. Then, you must look for a zebra crossing. Then, you must look at the traffic lights and wait for the green man.
Can you see the red man You mustn’t cross the road now.
Look! Here’s the green man.
You can cross the road now.
Let’s learn
道路安全
First,you must look for a zebra crossing.
首先，你必须寻找斑马线。
You mustn’t cross the road now.
现在你禁止穿过马路。
How can you cross them safely
你怎样才能安全地穿过它们？
Let’s learn
句型“You must+动词原形(+其他).”意为“你必须做某事。”
eg.You must be careful when you cross the road. 当你过马路时，你必须小心。
句型“You mustn’t/must not + 动词原形（+其他）.”意为“你禁止做某事。”
eg.You musn’t swim here. It’s dangerous! 你禁止在这里游泳，这儿危险！
句型“How can+主语+动词原形(+其他) ” 意为“某人怎样才能做某事？”
eg.How can I get to the cinema
我怎样到达电影院？
Sometimes, you cannot find a zebra crossing near you. To keep safe, you can wait on the pavement and look out for cars and bikes. You must first look left, then right and then left again.
You can also cross the road with other people. Then the drivers can see you easily.
Let’s learn
look out for 当心；提防
eg.When we walk in the forest,we should look out for the animals. 当我们走在树林中时，我们应该当心小动物。
Some children run or play football on the road. This is not safe. You must not play on the road because there are many cars and bikes.
Follow the rules and stay safe on the road.
Let’s learn
follow the rules 遵守规则eg.We must follow the rules at school. 在学校我们必须遵守规则。
知识拓展：
must与have to都有“必须”的意思，二者区别在于：
must强调主观上的“必须”，表示出于个人意志必须做某事。
have to 强调客观上的“必须”，表示由于客观原因不得不做某事。
试比较：
eg.You must get home before dinner. 你晚饭前必须回家。
eg.I have to finish this essay today.Tomorrow we need to hand them in. 我今天必须得完成这篇论文，明天我们需要上交。
To cross a busy road safely, we must first look for a _________________ and then look at the _______________.
Sometimes, we can wait on the _____________. We must first look _________, then ______ and then look ______ again before we cross the road.
We can also cross the road with _______________.
We must not _____ or ______ on the road.
zebra crossing
traffic lights
pavement
left
right
left
other people
run
play
Think and write
What must you do to cross the road safely What must you not do
We must …
We mustn’t …
Look and say
We must wait on the pavement and look out for cars.
We mustn’t run on the road.
Look and say
We mustn’t play on the road.
We must first look left, then right and then look left again before we cross the road.
Homework
List out what you must do and must not do. Make it into a form.
Unit 4 Road safety
Lesson 2 Grammar time
Fun time
How can you cross the road safely

What must not do on the road
Rule 1: We must look for a zebra crossing,
then we must look at the traffic lights.
Rule 2: We must not run or play on the road.
Grammar time
eg.
You must look for a zebra crossing
.
look at the traffic lights
mustn‘t play football on the road
run on the road
情态动词
动词原形
mustn’t=must not
Grammar time
在情态动词中，must的语气最强，意思是“必须”，
mustn’t的意思是“禁止”，常用于法律法规的要求。
You can wait on the pavement .
cross the road with other people
can‘t cross the road here
cannot find a zebra crossing
动词原形
can’t=cannot
情态动词can的意思是“可以”,
can’t 的意思是“不可以”。语气偏弱。
情态动词
We (mustn’t/ must) talk in the library.
You (can/ mustn’t) cross the road with other people.
I am learning to swim. I (can/ can’t) swim.
We (can/ must) swim well.
Exercise: Read and choose
Fun time
Red man, stop. Green man, go!
What must you do on the road
Right!
I must look out for cars.
What must you do on the road
No, you
mustn’t run quickly on the road!
I must run quickly on the road.
五人一小组，开展“红绿灯”游戏，一人饰演交警，提出问题，指定某人回答，其他人要给予反馈。
Look for more rules in public
places and write down them.
homework