This book is ___ to be too difficult to___

来源:百度知道 编辑:UC知道 时间:2024/09/24 17:14:37
a. considering; reading b. considered; be read
c. considering; read d. considered; read
选D 1. 一般v-ing形容物,v-ed形容人,此处呢?
2. 为什么不是to be read?

1、这个句子用的结构就是:consider sb/sth to be adj.变为被动就是:
sb/sth is considered to be adj

即This book(就是sth) is considered to be too difficult(就是adj)

2、consider还有这个句型:
it is considered to be adj to do sth
可以把sth拿去替换it变为:
sth is considered to be adj to do(上面的句子就是这个句型),并且这里的do跟主语sth有逻辑上的动宾关系。
因此不可用不定式的被动,只能用主动:
This book(就是sth) is considered to be too difficult(就是adj) to read.

1、不是。be considered to do 表被认为做某事
2、相当于It is +adj.+to do的形式(只助于理解)。这是习惯用法。