《Planet Danny》Look into Science! PPT免费下载
第一部分内容：Discussion
Do you know any of the planets in the solar system?
What would you like to look at with a telescope?
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Planet DannyPPT，第二部分内容：New Words
1. telescope n. 望远镜
2. solar adj. 太阳的；关于太阳的
solar system 太阳系
3. certainly adv. 当然；确定；肯定
e.g. – Can I borrow your bike?
– Certainly!
— 你能借我你的自行车吗？
—当然可以。
4. unless conj. 除非；如果不
unless意为“除非；如果不”，用来引导条件状语从句。
e.g. I won’t write unless he writes first.
除非他先写要不我不写。
Unless he telephones me, I can’t leave here.
除非他打电话给我，否则我不能离开这里。
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Planet DannyPPT，第三部分内容：Let's do it!
1. Read the lesson and write true (T) or false (F).
1. Danny is studying the solar system at school.( )
2. Danny is looking through the telescope when Jenny and Brian come to visit. ( )
3. During the day, Danny can see many stars in the sky through the telescope.( )
4. Jenny and Brian will join Danny after supper. ( )
5. Danny has discovered a new planet.( )
2. Listen to the dialogue and tick the correct answers.
1. What did Danny do last night?
□ He tried to study the moon.
□ He tried to find a new planet.
2. What did Danny use?
□ A telescope. □ A book.
3. What did Danny need?
□ More sleep. □ More stars.
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Planet DannyPPT，第四部分内容：状语从句
1. 条件状语从句
当一个句子在复合句中用作状语时叫做状语从句。当从句表达“如果……”的意思时，叫做条件状语从句，我们通常使用连词if，unless来引导。
if引导的条件状语从句可以放在主句之前，但主从句之间常用逗号隔开。if引导的条件状语从句也可以放在主句之后，主从句之间无需用逗号隔开。
e.g. If he wants to go, please tell me.
Don’t cross the road if the traffic light is red.
unless是连词，意为“除非；如果不”，也可以引导条件状语从句，含有否定意义，相当于if ... not。
【注意】unless引导条件状语从句时，如果主句是一般将来时，从句用一般现在时表将来。
e.g. We’ll go to the concert unless it doesn’t rain.
2. 让步状语从句
让步状语从句由下列从属连词引导：
though（虽然），although（虽然），as（尽管），even if（即使），even though（即使），no matter …（不管）等。
e.g. Although it rained a lot, we enjoyed our holiday.
The house isn’t very nice. I like the garden though.
Even though I was really tired, I couldn’t sleep.
I’ll visit him this evening even if I can stay only a few minutes.
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Planet DannyPPT，第五部分内容：Language Points
1. Danny turns the telescope around and looks through it again.
丹尼把望远镜掉过头来，又从里面望去。
turn around / round的意思是“调转方向；转身”
e.g. I turned around / round and saw the boy climbing up the tree.
我转过身来，看到那个男孩正在往树上爬。
Why did they turn their desks around?
他们为什么把书桌放反了？
2. I don’t think you can find one unless you have a bigger telescope.
我认为你发现不了（星星），除非你有一个大一点的望远镜。
unless是连词，意思是“除非，如果不”。
由unless引导的条件状语分句既可以是真实条件，也可以是非真实条件。
作为真实条件分句，unless通常相当于if…not。
e.g. We won’t be able to reach the top of the mountain unless the weather changes(= if the weather doesn’t change).
如果天气不变化，我们就不能到达山顶。
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Planet DannyPPT，第六部分内容：Homework
Do more research on one planet of your choosing.
Include a drawing or model of the planet that you can hang up in the classroom.
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