冀教版九年級(jí)英語(yǔ)上冊(cè)《Planet Danny》Look into Science! PPT精品課件，共21頁(yè)。
Lead-in
1. Do you know any of the planets in the solar system?
2. What would you like to look at with a telescope?
Read and answer the questions.
1. Why does Danny only see a tiny circle of light?
Because he uses the wrong end.
2. When will they look at stars through the telescope again?
At around 7:00 p.m.
3. What size telescope will Danny use to find a new planet?
Double the size of Danny’s house.
Language points
1.I don’t think you can find one unless you have a bigger telescope.
我認(rèn)為你不會(huì)找到的，除非你有一架更大的望遠(yuǎn)鏡。
unless為連詞，意為“除非，如果不”，相當(dāng)于if…not… ，引導(dǎo)條件狀語(yǔ)從句。
當(dāng)主句是一般將來時(shí)態(tài)、祈使句或謂語(yǔ)中含有情態(tài)動(dòng)詞或主句是一般現(xiàn)在時(shí)，從句中要用一般現(xiàn)在時(shí)代替一般將來時(shí)。
I will be very angry unless you go with me.
=I will be very angry if you don’t go with me.
如果你不和我去, 我會(huì)很生氣。
You will miss the bus unless you hurry up.
除非你快一點(diǎn)，否則你會(huì)誤車。
Don’t ask me to explain unless you really don’t understand.
不要叫我解釋, 除非你真的不懂。
2. Well, it’s worth a try, even if I don’t find a planet.
嗯，那仍值得一試，即使我沒有發(fā)現(xiàn)一顆行星。
（1） worth 形容詞，意為“值得”，
be worth doing sth. 值得做某事。
The clock is worth ten dollars.這個(gè)鐘表價(jià)值10美元。
Is it worth running such a risk? 這樣冒險(xiǎn)值得嗎？
（2）even if 意為“即使；縱然” （= even though），引導(dǎo)讓步狀語(yǔ)從句。
He will come on time even if it rains.
即使下雨他也會(huì)按時(shí)來。
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關(guān)鍵詞：Planet Danny PPT課件免費(fèi)下載，.PPTX格式；
