Unit 4 Astronomy the science of the stars-Using language II（Speaking）课件（23张）

课件23张PPT。Book 3 Unit 4 Astronomy
the science of the stars
Using language II (Speaking)What do you need if you travel to the moon?Speaking on page 31 (1)What to dressHow to breatheWhat to eatHow to cool youProblems1. Oxygen can2. Water system5. Right engine4. Left engine6. Tool kit3. Gravity bootsWhat would
you need?
spaceshipspacesuitwaterOxygen producer a space camera……If you were going to the moon…Brainstorming Fill in the chart. spaceship with water to cool youcarrying oxygen tanksspacesuitspacebuggyspacesuita rope to tie you to the spaceship space food that you can eat easilyspacesuitsunglassesspace cameraStudents work in pairs and give each other a number of “does” and “don’ts”for going to the moon.When finished,you can write some suggestions of yours down and read them out to the rest of the class.Discussion:
Sample dialogues:
S1: Let’s think about what we would need to protect our skin if we visited the Moon.
S2: I’d take some skin cream. That works very well when we go to the sea.
S3: Yes, but it’s going to be much too hot to put cream on your skin on the Moon.S4: What’s more you get direct heat from the sun. There are no clouds on the Moon to protect you.
S3: Oh dear, and I also have to carry oxygen around with me everywhere because there’s no oxygen on the Moon.
S2: Why don’t we carry the oxygen on our backs in a tank?
S1: Good idea, but won’t that hurt our skin?
S4: I think it will. Why don’t we wear a spacesuit which has the possibility of protecting your skin and helping you carry the oxygen very easily?S1: A very good idea. We also need some sunglasses as the sun will be as bad for our eyes as for our skin.
S3: That’s right. The helmet of the suit can have sunglasses you can use.
S2: How will the suit protect our skin?S4: It’s so hot there so I suggest we design suit that can supply cold water so the wearer feels cool and hot water to warm us if we feel cold.
S2: Great! So I won’t need sun cream after all. That’s good!Speaking on Page 31 (2)
Useful expressions:
Please pay attention to…
Please check that…
You need…
Don’t forget to…
Make sure that..
Watch out for…
You’d better (not)…
You must / mustn’t..
Please look at…Speaking on Page 31 (2)
1. Work in pairs
2. Using the expressions above
3. According to the situations given
beforehand
4. Act out in class
Talking on Page 62Show the useful expressions:
Please look at/ listen to...
Please check that...
You need...
Please pay attention to...
Don’t forget to...
You’d better...
Make sure you...
Watch out for...
You mustn’t...Sample dialogues:A: I’m going to visit a comet. How exciting! I’m leaving tomorrow.
B: Please check that you have got the correct sort of spacesuit. You need the kind that will keep you warm in the coldest weather.A: Of course!
B: Make sure you know all the safety rules. It’s not safe to stand on a comet or get too close. There is always a strong wind in space.
A: Of course I won’t leave the spaceship except to take photos..B: Photos? Just think of the dust in the air. It will make taking photos very difficult.
A: Well, I plan to take some anyway.
B: Watch out for the space wind, which can be very dangerous. It makes a strange noise too as it goes through the sky. You may be able to hear it.
A: Yes. My space leader has already mentioned that.B: Lastly, don’t forget to watch the time as you leave the earth. Then we can check it again when you get back. We can see whether the time you were away is the same time on your watch. Also please pay attention to everything your space guide says. Do not go off on your own. Look at the temperature on our spacesuit at all times. If it gets too low you need to warm it up and if it’s too high you need to push the button to cool it down. Anyway, have a good trip!
A: Thank you. I will!Homework Prepare for writing a passage about your idea or hopes for traveling in space after class.