第一题 D 前面一个句子表达了完整的意思,后面用as引导非限制性定语从句,修饰前面的整个句子.
what引导定语从句中的宾语从句,作宾语.
句子意思是：正如我们想要的那样,会议被推迟了.
所以选 D.as;what
第二题 D 表示过去的过去 kept looking 已经是过去时了 在此基础上,而那时在想“以前”曾经在哪里见过,是“以前的以前”.
所以选 D.had seen
which 和 as 都可以引导非限制性定语从句
【区别】
1、语义的区别
当主句和从句语义一致时,用as；
He made along speech,as we expected.
当主句和从句语义转折不一致时,用which,
He made along speech,which was unexpected.
2、位置的区别
看到句首一定用as,which 不可能放在句首.
as we all know,
as is mentioned above
as often happens
as is often the case
As is well known
3、含义的区别
as有“正如”的含义,which没有此含义.
As is well known,Shanghai is a big city．
Some of the roads were flooded,which made our journey more difficult．
4、否定句用which
Tom drinks a lot everyday,which his wife doesn’t like at all.