区别是:
as引导的定语从句表示它的内容与主句所讲的事物“相似”,即指同类的事物;that引导的定语从句表示它的内容与主句所讲的事物是“同一的”,即指同一事物。它们的前提都是在主句中有the same。 as 一般引导非限制性定语从句,that 一般引导限制性定语从句。
as 可以引导一个属于附加说明性质的定语从句,as代指整个主句的内容并在定语从句中作主语、宾语或表语。这种as定语从句可放在主句的前边或后边,并有逗号和主句隔开。常见的由as引导的这类定语从句有:
as has been said before 如上所述。
as may be imagined 正如可以想象出来的那样。
as is well known 众所周知。
as was expected 正如预料的那样。
as has been already pointed out 正如已经指出的那样。
as we all can see 正如我们都能看到的那样。
温馨提示:答案为网友推荐,仅供参考