高二英语教案:Unit 5 The power of nature
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Be careful with fire, or it will the whole building.
A. burn down B. burn for
C. burn up D. burn in
解析：选A。考查短语辨析。burn down (建筑物）烧毁，火力减弱；burn for渴望； burn up 烧毁，烧得更旺/亮，消耗；burn in 给……留下不可磨灭的印象。此处应是“把……烧毁”的意思。
7. quite a few
好些；相当多
I have made quite a few friends here.
在这里我已经交了好多朋友。
易混辨析
very few/only a few/a few/not a few
very few, only a few都可表示“少”，“几乎没有”的意思，但very few侧重于“几乎没有人”或“大多数都不”这一概念。
only a few侧重于表达“在许多之中有几个”， 不强调 “大多数不”这一概念。
a few 意思是“少数几个，一些”，表达肯定概念。
高手过招
完成句子
—Are your friends here?
—Yes, (相当多) are here.
答案：quite a few
not a few 相当于many，意思是“许多、大量”。
Very few people can bear the cold in Antarctica.
几乎没有人能忍受南极的寒冷。
Only a few people could see the scene.
只有几个人看到了这个景象。(看到这一景象的人不多。)
A few friends came to see me last week.
上星期有几个朋友来看我。
Not a few students are going there.
许多学生都要去那里。
重点句型
8. I was fast asleep when suddenly my bed began shaking and I heard a strange sound, like a railway train passing my window.
我睡得正酣，正在这时我的床开始晃动，我听到一种奇怪的声音，就像一列火车正从我窗外驶过。
when引导了时间状语从句。在此状语从句中，and连接两个并列的句子。like a railway train passing my window为介词短语作定语，修饰sound，而a railway train passing my window为like的复合宾语。
“be+形容词/表示状态的介词短语+when ...”表示“正在做某事，就在这时……”。
联想拓展
be about to do sth. when ... 正要做某事，就在这时……
be doing+when ... 正在做某事，就在这 时……(分句中的动作往往是短暂性的)
had just done when ... 刚做过某事，就在这时……
温馨提示
此时的when不可以与while互换,也不可以将when引导的从句置于句首。
I was fast asleep when suddenly there was a loud noise outside my room.
我睡得正香，就在这时房外传来巨大的噪音。
He was on a journey to Europe when he received her call.
他正在去欧洲的旅行中，就在这时他接到了她的电话。
We were on a flight to Tokyo when suddenly I remembered I had left my passport home.
我们正在去东京的飞机上，这时我突然想起我把护照忘在了家里。
高手过招
单项填空
The boys were about to go out to play football suddenly it began to rain.
A.When B. as C. while D. Then
解析：选A。考查“be about to do when ...”的句型。此结构的意思是 “正要做某事，就在这时……” 。其中when相当于and just then，不可以用while, as等替换。
9. The other two climbed down into the crater to collect some lava for later study, but this being my first experience, I stayed at the top and watched them.
另外两人攀下火山口去收集供日后研究用的岩浆，我是第一次经历这样的事，所以留在山顶上观察他们。
句中的this being my first experience为独立主格结构。
独立主格结构（Absolute Structure）是由名词或代词加上分词等构成的一种独立结构，用于修饰整个句子。独立主格结构中的名词或代词与其后的分词等构成逻辑上的主谓关系。这种结构与主句不发生句法上的联系，它的位置相当灵活，可置于主句前、主句末或主句中，常由逗号将其与主句分开。需要特别注意的是，独立主格结构与主句之间不能使用任何连接词。
