Question

请帮忙分析分析!!!!谢谢!

The engineers and the workers have overcome a lot of difficulty_____some new products.
A they had developed
B to have developed
C they had developing
D having developed
为什么要选c 能说明原因吗!?
那么我该选什么呢.我老师选的是C??? 我不知道理由.!!!

应该选D???????

Answer 1

给你简单分析一下:
大意:工程师和工人们(已经)克服了好多开发新产品(中)的困难.

本句主干:
The engineers and the workers overcome difficulty.
本句选A的话,句子成分冗余,没理由再多出一套主谓.
B C（*应改为D） 搭配不合理.

选D（*改为C）的话,(that/which)they had做difficulty的定语从句;developing some new products现在分词做状语.

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呵呵，上面把C、D颠倒了（看*处），是应选C。
再说，你看我解释的内容，就是最后一段，不还是C么。

呵呵，笔误。

Answer 2

应选B
to表示目的。
意思是工程师们和工人们已经克服了许多困难来开发许多新产品。

Answer 3

C里面把they had和developing分开来看。是说they had的许多difficulty，以及difficulty (in) developing.