as...as难句分析，以及为什么第二个as后出现了doing动名词结构？
That's why today I'm calling on each of you to set your own goals for your education and to do everything you can to meet them。
Your goal can be something as simple as doing all your homework, paying attention in class, or spending some time each day reading a book.
以上，出现了as...as...比较状语从句，想知道：
1）是哪个部分和哪个部分在作比较？ 省略了什么相同的比较部分？
2）为什么第二个as后使用了动名词结构doing all your homework, paying attention in class, or spending some time each day reading a book.？
语法如何分析？
麻烦专家老师详细分析！ 非常感谢！
最佳答案 2019-11-06 15:22
看一个例句：
He has a car as big as a small house.
你可以简单地把 as big as a small house视为形容词短语作定语修饰 a car. 像一幢小房子一样的车。即把第二个as简略地分析为介词。
你也可以认为as big as a small house前省略了that is， 即句子等于：
He has a car that is as big as a small house (is).
你的句子也可以用这二种方法分析。第二种分析为：
Your goal can be something that is as simple as doing all your homework, paying attention in class, or spending some time each day reading a book (is).
即三个动名词短语为比较分句的主语，用or连接，谓语动词is按就近原则与最近的一个主语一致。is可以省略。
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