[求助]几道不明白的pp语法题？

cardozo

pp-1-70 Stars provided early astronomer with a reference system for measuring the motions of   

planets, the Moon, and the Sun.

reference不是名词吗？为什么能修饰sysyterm?

pp-1-90 A major Canadian city, Montreal is second only to Paris as the most largest French-speaking

   city in the world.

second 是序数词为什么它前面可以不加the?

pp-1-91 Archaeological and geological excavations indicate which a primitive type of corn was used as food in North America at least 7,000 years ago

corn为什么可以单独存在？

pp-1-92 The major component of the sedimentary rock called shale is clay, an earthy, fine-grained material consisting primary of a particular group of crystalline minerals.

earthy不是形容词吗?怎么在an后面？

多谢！！！

hendragom

1.

答案：Aàastronomers

可数名词单数不能单独出现

参考译文：天上的星星给早期天文学家提供了一个参照系统来测量行星、月亮和太阳的移动。

另外名词可以修饰名词。

hendragom

2.

答案：D

最高级表述有误。Largest已经是最高级了，前面不用再加most

参考译文：加拿大主要的城市蒙特利尔，是世界上仅次于巴黎的第二最大法语城市。

SECOND后面没有名词，不是所以不加THE

hendragom

3.a primitive type of修饰CORN了啊？

考古学和地质学挖掘发现表明远古种类的谷物早在7千年前就被当作食物了。

hendragom

4.一种土质的

明白了吧。

ada165

an earthy, fine-grained material

an+ adj, +      adj    +  noun.

酷小牛

  
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酷小牛

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