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【as 引导的五种状语从句】
1. A look of surprise came into her eyes as she read the message. 她看信息时，露出来吃惊的眼神。 （时间）
2.It is difficult for us to know what to do as we are not his parents. (原因)
3.You ought to do as he tells you. (方式)
4.Much as I admire him as a writer, I do not like him as a man. 虽然作为一位作家我敬佩他，但作为一个普通人我却不喜欢他。（让步）
5.He considered her opinion as valuable as any of ours. 他认为她的意见和我们的意见一样有价值。 （比较）
6.The population of Scotland was eight times as large as that of Cornwall. 苏格兰的人口是康沃尔的8倍。（比较）
【as引导表语从句】
7.Things were almost as they had been before. 情况几乎和从前一样。
【as可作关系代词和关系副词引导定语从句。】
8.The doctor gives the patient the same medicine as last. 医生给病人开的药与上次相同。 （关系代词）
9.Meet me at the same place as you did yesterday. 在昨天接我的同一个地点接我。 （关系副词）
10.As was expected, she performed the task with success. 正如大家预料的那样，她成功地完成了任务。 （关系代词）
练习：分析下面的句子，特别注意as的用法。翻译
【1.practice常规，惯例 2. . conform to遵照,遵守;适应 3. recreate重现，重新创造】
While there are almost as many definitions of history as there are historians, modern practice most closely conforms to one that sees history as the attempt to recreate and explain the significant events of the past.
答：1.…….as 引导了一个比较状语从句 2. see A as B 把A 看作B
尽管有多少历史学家就有多少对于历史的定义，但是现代的惯例（现代的关于历史的定义）还是紧密地遵守了这样一个定义，即：把历史看作是一个能够重现和解释过去重大事件的尝试。
在下面的句子中as 指代什么？它引导的事什么从句？自己小结一下as的用法。
*1. 【1. Norsemen古代挪威人,古代斯堪的纳维亚人 2. spice少许,一点
In the ninth century, the conquering Norsemen from Scandinavia added their pinch of language spice, as did the French in the 11th century.
*2. [1. shed摆脱,去除 2. vowel元音,元音字母
Deposite has lost its e, as have fossile and secretariate. Musick and physick have dropped their needless k's, and catalogue and dialogue have shed their last two vowels.
小结： as 引导定语从句，它指代的是其前面句中的实意动词部分，其后跟上了一个省略了实意动词的部分倒装句。在第一句中 as = added their pinch of language spice; 第二句中a
用as 造句：
1． 你最好照我说的去做。
You’d better do as I told you.
2.我的手机和你的手机一样实用。
Though cheap, my cellphone is as practical as yours.
s = lost its e
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