This book is ___ to be too difficult to___a.considering; reading b.considered; be readc.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?

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This book is ___ to be too difficult to___a.considering; reading b.considered; be readc.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?

This book is ___ to be too difficult to___a.considering; reading b.considered; be readc.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?
This book is ___ to be too difficult to___
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?

This book is ___ to be too difficult to___a.considering; reading b.considered; be readc.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。