求教这里的as是什么用法
closer international communication and cooperation is critical as countries across the world work together to improve product quality and safety with this inmind，I have the following points to make
一、as作连词的用法
1. as...as的用法
as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为：as+ adj./ adv.
+as.例如：
(1)This film is as interesting as that
one.这部电影和那部电影一样有趣.
(2)Your pen writes as smoothly as
mine.你的钢笔书写起来和我的一样流畅.
其否定式为not as/so +adj./ adv.
+as.例如：
This dictionary is not as/so useful as
you think.这本字典不如你想象的那样有用.
若有修饰成分,如twice, three times, half, a
quarter等,则须置于第一个as之前.例如：
Your bag is twice as expensive as
mine.你的袋子比我的贵一倍.
1. as...as的用法
as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为：as+ adj./ adv.
+as.例如：
(1)This film is as interesting as that
one.这部电影和那部电影一样有趣.
(2)Your pen writes as smoothly as
mine.你的钢笔书写起来和我的一样流畅.
其否定式为not as/so +adj./ adv.
+as.例如：
This dictionary is not as/so useful as
you think.这本字典不如你想象的那样有用.
若有修饰成分,如twice, three times, half, a
quarter等,则须置于第一个as之前.例如：
Your bag is twice as expensive as
mine.你的袋子比我的贵一倍.
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