_ our food running out ,we had to walk to a village for help

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_ our food running out ,we had to walk to a village for help.
A.Since B.Because C.With
答案是C考查with 的复合结构,但是A和B不选的原因是什么?

A,B 都是从属连词,可以用来引导原因从句,可是题干our food running out 是个复合宾语,只有with 这个介词可以接这样的复合宾语,表原因等
此题的关键是要注意running out 不是谓语,而是非谓语动词,做宾补的
再问： These rivers should be prevented _.
A. to be polluted B. from being polluted C.
polluting D. being polluted
选哪个？为什么？谢谢。

Who prevented their plans from _？
A. carrying out B.to be carried out C. having carried outD.being carried out
选哪个？为什么？

这两个题都考查到了prevent.请说一下考察点。
再问：为什么prevent from 后跟的东西不一样？还有不是说，这里的from 可以省略吗，为什么第一个的 D项不能选？
再答： prevent sb from doing sth
prevent sth from being done
所以第一题选B; 第二题选D, 都属于第二种情况
再问：嗯，那第一题里的D 为什么不能选，明明讲的时候是prevent 的from 可以省略、只有keep 的from 不可以省？
再答：这你要清楚为什么可以省：
如：
We should prevent these river being polluted
此句没有from(你可以理解为省了from), 其实是因为prevent 可以接动名词作宾语，没有from 的话，如此句these river being polluted就是“动名词的复合结构”作宾语的，也就是说这时它是个整体。
好，那我们回过头来看第一题，如果选D, ....呵呵，谁还看得出是“动名词的复合结构”呀！：）显然不对！！
再问： 🙏

_ our food running out ,we had to walk to a village for help ( )our food running out ,we had to walk to a village for hel _____our food running out .we had to walk to a village for h __our food __,we had to walk to the town for help.A.Since;ru We had such fine w that we decided to go out for a walk We were about to go out for a walk ________ it began to rain The poor lady had to go out for food ______ a cold morning The poor lady had to go out for food a cold morning. It is ______ that we’d like to go out for a walk. A. a lovel it is such fine a day that we all want to go out for a walk It's a fine day for ______.let's go out ,shall we?A,to walk; 英语翻译17.___B___therewere no buses,we had to walk home.A.For B