作业帮非谓语与时态
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/07/06 00:43:31
①The split between humans and living apes is thought by some scholars C 15 to 20 million years ago. A. to occur B. occurring C. to have occurred D. having occurred 求教老师为什么选C？ ②The flowers were so lovely that they C out in no time. A.sold B.had sold C.were sold D.had been sold 求教老师为什么选C而不选D？
解题思路： 在语境中分析，选择最佳答案
解题过程：
同学你好，这两天老师有事没上线，让你久等了，见谅！呵呵
①The split between humans and living apes is thought by some scholars C 15 to 20 million years ago.
A. to occur B. occurring C. to have occurred D. having occurred
这道题考查的是习惯句型，be thought / considered / said / reported ... to have done
表示不定式的动作发生在谓语动词之前。这道题意思是说：人类与猿的分离被一些学者认为发生在一千五百万年到两百万年以前。表明区别先分离，学者后认为的。
又如：The bank was reported to have been robbed in the newspaper.
据报纸报道，银行被抢了。表明银行先被抢，报纸后报道的。
Bell is considered to have invented the telephone.
②The flowers were so lovely that they C out in no time.
A.sold B.had sold C.were sold D.had been sold
句意为：这些花如此可爱，以致于很快就卖光了。C项是一般过去时，用来陈述过去发生的事件，而D项是过去完成时，必须有过去的时间为基点，我们不能说花被卖光发生在可爱之前哟，所以D项不对。
如：
The train had left before we arrived at the station.
我们到车站之前火车就开走了。我们到达用的是arrived，而火车离开是发生在到达之前的。
明白了吗？孩子，若有疑问请继续添加讨论啊，祝你假期快乐！！
最终答案：略
解题过程：
同学你好，这两天老师有事没上线，让你久等了，见谅！呵呵
①The split between humans and living apes is thought by some scholars C 15 to 20 million years ago.
A. to occur B. occurring C. to have occurred D. having occurred
这道题考查的是习惯句型，be thought / considered / said / reported ... to have done
表示不定式的动作发生在谓语动词之前。这道题意思是说：人类与猿的分离被一些学者认为发生在一千五百万年到两百万年以前。表明区别先分离，学者后认为的。
又如：The bank was reported to have been robbed in the newspaper.
据报纸报道，银行被抢了。表明银行先被抢，报纸后报道的。
Bell is considered to have invented the telephone.
②The flowers were so lovely that they C out in no time.
A.sold B.had sold C.were sold D.had been sold
句意为：这些花如此可爱，以致于很快就卖光了。C项是一般过去时，用来陈述过去发生的事件，而D项是过去完成时，必须有过去的时间为基点，我们不能说花被卖光发生在可爱之前哟，所以D项不对。
如：
The train had left before we arrived at the station.
我们到车站之前火车就开走了。我们到达用的是arrived，而火车离开是发生在到达之前的。
明白了吗？孩子，若有疑问请继续添加讨论啊，祝你假期快乐！！
最终答案：略