Question

3道高一英语题 求具体讲解~~谢

1 _______ , cattle's two stomachs help them digest food better.
A。That is pointed out B. As is pointed out
C. It must be pointed out D. It has been pointed out
标答：B 【 B的句型？ 其他3选项有何不妥也请指出 】

2 New ways have to be found to _______ prevent wildlife being endangered . Which of the following is not OK?
A keep B protect C prevent D stop
标答：C 【请详细讲一下4个词的区别 尤其是A C】

3 I want to buy that kind of cloth because I _____ the cloth _____well.
A have told; washed B have been told; washes
C was told ; washed D have been told; is washed
标答：B 【请重点讲解第二空 为何不用被动语态？】
那个...2题干写多了个“prevent”...
1 中 解释下句意再...

Answer 1

1空 首先从句子结构看，出现了逗号也就是说属于非限制性地语从句或者属于主从句。但是CD两项已经有IT座形式主语而且句子成分完整又无连词连接所以予以排除。假设A项是对的，那么主句与从句之间没有连词而且THAT不能应用在非限制性定语从句中。只有AS 放在句首指代后面的整句话。再者as与 which一样都可以引导非限制性地语从句只是先后的顺序不一样了请看：
1. this kind of flower smells good ,which is called lily.
2. as is to be seen, dragon is a sign of culture.
2空 首先 这是一道词义辨析题A keep 保持 B protect 保护 C prevent 预防 D stop停止 答案显而易见。
3空 首先这是一道与中文思维习惯表达不同的题目。衣服是被洗的（中文的说法）而在英语中被动变为主动（属于英语一些特殊词）请看：
1, it tastes good .2 the book sells well .3 the hamberg keeps three hours at most. 此三例句与第三题的第二空属于同一题型。考察系动词用法，wash也是许多无被动语态的系动词的一个（属于英语习惯表达熟记便可）.

Answer 2

1.ACD都有完整的主语谓语,,而本句只是一个从句
2.A的话需要加上from才等于prevent，即protect/keep wildlife from being dangered.
prevent后面加不加from都可以
3.wash这里是主动代替被动的用法，类似的还有sell,write,open,lock,wear,keep,cook,cut等。它们与well,smoothly,easily连用的时候，说明主语内在的性能、特点，用主动代替被动