prep-p2-83 请NN帮忙

xiaoyuexing

The number of plant and animal species that humans are known to have forced to extinction in the last half millennium is over 800.

 

(A) humans are known to have forced to extinction

 

(B) humans are known as having forced to become extinct

 

(C) humans are known for forcing to become extinct

 

(D) are known that humans forced to become extinct

 

(E) are known as having been forced to extinction by humans

 

 答案: A  这个题不是很明白,为什么从句中是 humans做主语.....这里that引导的不是主语从句么??

 

很是不明白...

haihngm

主句:
The number of plant and animal species...is over 800.

xiaoyuexing

这里是不是把humans给提前了?这里的正常语序是不是 are known to humans have forced to extinction.......是不是这样的呢?

haihngm

不是
humans are known to have forced those plant and animal species to extinction.

gaoshenglan

虽然意思了解 但不会马上反应出来 不过通过be known to倒是可以判断出来的!!