高一英语：知识点总结Unit1-2(15)
3. One day Chuck is on a flight across the Pacific Ocean when suddenly his plane crashes. 一天，查克在飞越太平洋时.他的飞机突然坠毁了。
该句中的“when”表示“正在这时”，相当于and just或and at that time. 这时不能用while / as 替换。
常见句型：(1) be about to do sth when... (2) be doing sth when... (3) be on the point of doing sth when...
【考例】We were swimming in the lake ____ suddenly the storm started.
A. when B. while C. until D. before
[考查目标] "when" 作连词，表示“正在这时”。
[答案与解析] A 意为“我正在湖中游泳，突然暴风雨来了。”只有when才能用于这种句型。
4. He has to learn how to collect water, hunt for food, and make fire. 他不得不学会收集淡水.寻找食物，生火什么的。
该句中的“how I to collect...”为动词不定式短语作宾语。例如：We must decide which one to buy. 疑问词which, what, how, when, where等与小定式构成不定式短语。
【考例】 I've worked with children before, so I knew what ____ in my new job.
A. expected B. to expect C. to be expecting D. expects
[考查目标] what to do sth 不定式短语作宾语。
[答案与解析] B 该句需要填非谓语动词。排除A、D。句意为“以前我与孩子在一块儿工作过。因此我知道我的新工作需要什么。”C不表示进行，排除C。
5. In order to survive, Chuck developed a friendship with an unusual friend — a volleyball he called Wilson. 为了生存下去，查克和一位不寻常的朋友--“排球”建立了友谊，查克叫他威尔森。
1. 该句中的"in order to"，意思为“为了，以便”，作目的 状语。在句子中作同的状语的常见句型有五种结构：to do sth / in order to do sth / so as to do sth / in order that clause / so that clause
注意：(1) so as to do sth 不能位于句首。(2) 如果主句与从句的主语一致时，四个结构可以相互转换。(3) 在in order that / so that 引导的从句中，谓语动词常与can, could, may, might 等情态动词连用。
【考例】 I'd like to arrive 20 minutes early ____ I can have time for a cup of tea.
A. as soon as B. as a result C. in case D. so that
[考查目标] 目的状语。
[答案与解析]D as soon as “一…就…”;as a result“结果是”;in case “万一”;so that“以便，为的是”。句意：“我想提前二十分钟到以便有时间喝杯茶”。
2. 该句子中 volleyball 是作同位语。例如：He advised farmers to choose the best seed-heads, the ones that had the best color.
注意：这种同位语(不是同位语从句)与非限制性定语从句的区别。
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