求助?pp1-96,121,128?

风小小

[此贴子已经被作者于2004-11-20 14:45:31编辑过]

susanmz78

多谢指教!但是第二题我还是不太明白

1.为什么importance不可以用呢?

2.如果important 在句中有表语的成分,后面的句子不是应该倒装吗?能不能具体解释一下形容词放在句首的用法,多谢!!

friend_friend

1. need doing = need to be done. 如: The thing needs doing for improving English is coming to CD everyday.

这个问题前几天有人答过. 你句子中WHO是动作的实施者,不是承受者.所以不能用need reducing.

2. 逗号前的部分做状语, 具体倒important这个词, 在前面这个状语结构中是有表语性质的, 等于是carbohydrates are important as foods, ... 主语和系动词省略了.

3. 谁说过介词后不能直接跟介词?

susanmz78

96.Cyclamates were introduced in the early 1950's (as) alternative sweeteners (for) usr (by individuals) who needed (reducing) their sugar intake for medical reasons.

答案是D,不太明白,我记得语法笔记中need doing 是可以用的, 为什么这里不可以呢?

121. (importance) as foods,(carbohydrates) supply energy and (are) used (to make) fats.

答案是a,请教,我不太明白形容词放在句首的用法,只知道做表语的形容词可以放在句首,这里是做什么成分呢?

128.small to medium-sized (marsh) birds similar in body shape (by) cranes,rails are found (throughout) the world,(except) in the polar regions.

答案是B,没有问题,但是我觉得D也错了,不是说介词后不能直接接介词吗?请指教!