In my opinion,life in the twenty-first century is much easier than ________.

题目

In my opinion,life in the twenty-first century is much easier than ________.
A.that used to be B.it is used to C.it was used to D.it used to be
D 为什么不选A
为什么上题用it
The weather in Beijing is colder than that in Hunan.这个就用 that?
并且,下面句子是否正确
life in the 21 century is much eaiser than that in the past

答案

上句中,that引导名词性从句时,在句中不作任何的成分,也没有任何词义,只是起连接作用,而used to be前缺少主语,所以不能用that,而是it used to be.that代替前面提到的名词（即“定冠词／物主代词＋名词”）,以避免重复...