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高2009届高三英语 Unit 23重难点详解
Unit  23 The find of the century
一、课文疑难详解
1. Discovery发现
discovery是discover的名词形式,意为“发现,发觉”,如:This is the new discovery in science. 这是科学上的新发现。
2. One moment we were walking along the top of a hill and now we could see no more than about thirty metres ahead of us. 刚才一会儿我们还在山顶上行走,而现在三十公尺以外的地方就看不清了。
注意“one moment...and now...”这一结构,意思是“刚才还……现在却……”。其中,one moment相当于a moment ago的意思。如:
One moment the baby was crying and now it fell asleep. 刚才婴儿还在哭闹,现在却睡着了。
One moment they were making noises and now they just kept silent. 刚才他们还在吵吵嚷嚷,现在都不作声了。
3. We had lost the path and had no hope of finding it again. 我们找不到那条小路,而且也没有希望再找到了。
hope可用不可数名词,其后常跟of引起的介词短语,引导名词或动名词。如:
He gave up all hope of ess. 他不再抱成功的希望了。
Is there any hope of their group winning the prize? 他们组获胜有希望吗?
We had no hope of seeing him that day. 那天我们没希望见到他了。
4. I think we should continue walking as long as we can see where we're going. 我想,只要我们能够看到我们要去的地方,我们就应该继续走。
连词词组as long as = so long as,作“只要……就……”解,引导条件状语从句。它跟if状语从句一样,不用将来时态。
As long as you are happy, it doesn't matter what you (will) do. 只要你高兴,你干什么都不要紧。
He'll never forget that so long as he lives. 只要他还活着,他就不会忘记那件事。
5. Then the grass turned to bushes and the hillside became steeper. 接着,野草变成了矮树丛,山坡也变陡了。
句中的turn to作“变成”(e)解,其后跟名词。如:
Ice turns to liquid if we raise the temperature high enough. 如果我们把温度升到足够高的时候,冰就变成液体。
It w