Daniel plays chess ( ),if not better than,David.A.as well B.as well as C.so well D.so well asThe life we were used to ( )greatly since 1992.A.change B.has changed C.changing D.have changed最好配上解析（即原因）

B as well as 跟David玩的一样好
A to 后面跟动词原形

C.D 参考

选D 你可以把插入语部分去掉（if...）剩下的就是一个同级比较结构了。

选B we were used to 是the life 的定语从句。since是现在完成时的标志词 理解为 自从1992年以来我们所习惯的生活发生了巨大的变化。

Daniel plays chess ( B ),if not better than,David.
A.as well B.as well as C.so well D.so well as
中间为插入语，选B
The life we were used to ( B )greatly since 1992.
A.change B.has changed C.changing D.have changed
用过去完成时，选B

B if not better than为插入语,as well as 与…一样好.
B we were used to作为定语修饰the life,后面有since 1992,则前面要用完成时,注意主语是the life,后面相应用has

B
主干句句意是丹尼尔国际象棋跟大卫下的一样好
A的意思是“也”，不符句意
B是同。。。一样
C如此之好，缺少连接词
D是句子分成了两部分，连词为as。丹尼尔plays chess so well. 到底well到什么程度呢？as David does.用as做连词，前后为两个独立句子，所以后句必须加上一个动词。

A B
第一个既不清了，第二个，we were used to 是定语修饰The life
The life 是主语，因为是不可数，所以是has，时态是完成时