求助几道语法题

snowtulip

新东方语法教程 练习9 第3题

  Comparatively few cities in the United   States have  competing newspapers today, a major change from 1900       more than two newspapers.

A. because then most large cities having

B.when did most large cities have

C.then most large cities that had

D.when most large cities had

答案是c，百思不得其解，请各位前辈指教

新东方语法教程 练习8 第14题

Experiments related to the sense of smell are more easily ____ than those  related to perception of color.

A.setting them up

B.to set up

C.set up

D.sets up those

答案是c，可我觉得是B

新东方语法教程 练习8 第12题

The color and patterns of the wings of butterflies and moths help ____the organism against predators.

A.protect

B.being protected

C.protecting

D.protection of

答案是A,请指教，多谢

ncraig

1:练习9的第三题是D啊,C是错的,你再检查一下

2: easily后面跟动词啊,肯定是用set up的

3:用排除法先将B;D排除,然后根据短语heip sb doing sth知道C也有问题,所以正确答案就是A啦~

ncraig

第2个我是猜想的啊....

likui

以下是引用snowtulip在2005-2-27 15:08:00的发言：

新东方语法教程 练习9 第3题

  Comparatively few cities in the United   States have  competing newspapers today, a major change from 1900       more than two newspapers.

A. because then most large cities having

B.when did most large cities have

C.then most large cities that had

D.when most large cities had

答案是c，百思不得其解，请各位前辈指教

这道题目出的甚是奇怪，我始终不能理解a major change在这里是做什么成分的；

但是我们还是要来分析一下，你看，逗号之前已经主谓宾齐全构成句子了，那么后面应该做从句了。

（A） because应该后接句子，这里显然是错误的；

（B）语序问题，did根本不需要；

（C）不知道做什么成分，then不能做引导词；

（D）when引导从句根在1900表示年代，时间概念的一个词后，很合适。

新东方语法教程 练习8 第14题

Experiments related to the sense of smell are more easily ____ than those  related to perception of color.

A.setting them up

B.to set up

C.set up

D.sets up those

答案是c，可我觉得是B

如果是be easy to 那么就是选B了，但是这里是easily，一个副词那么后面应该跟动词或者动词词组。

我估计你的疑惑在set的过去式，过去分词上，其实set的过去式和过去分词都是set；

现在分词是setting

新东方语法教程 练习8 第12题

The color and patterns of the wings of butterflies and moths help ____the organism against predators.

A.protect

B.being protected

C.protecting

D.protection of

答案是A,请指教，多谢

考点：help to do 和help do都是对的；但如果help被动，那么就必须加to了。

snowtulip

谢谢大家的指导，我一定再接再厉，万分感谢！

cd小兵

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cd小兵

楼主看一下吧。 谢谢。