老师们好~我有两道题不懂..

—I can✀t see the blackboad clearly .—perhaps you need ____.A.examine your eyes B.examining your eyes C.having your eyes examined D.to have your eyes examined我觉得他说也许是你的眼睛该被检查检查了,用被动语态。need后用doing或者need to be done 表示,为什么选项是D?Every minute and every second should be made full ___of___the finails.A.use ;preparing for B.used ;being prepared for C.use ;to prepare for D.using ;prepare for 为是么不选A 选C 介词后不是跟动名词
2026年09月27日 14:05
有3个网友回答
网友(1):

第一题,选D, need 后用doing是指被动,主语一定是被动的,例如:the car needs repairing.
这里主语是you, 所以不能用doing,排除B,C 。 A的意思不符合,意思是你需要检查你的眼睛,应该是去医院叫医生检查自己的眼睛,所以只能先D。
第二题,选C,make full use of 充分利用,Every minute and every second should be made full use of是被动态,to prepare for the finals表示目的。

希望能帮到你,祝你成功!

网友(2):

第一个问题:
Perhaps you need to have your eyes examined.或许你需要检查一下你的眼睛。
sth +need+doing\to be done 这时候这个句型表被动,这时need 的主语是物,不是人。
The flowers need waterinig\to be watered.这些花需要浇水了。
在这个句子中Perhaps you need to have your eyes examined。主语是you ,你需要干某事就是主动,所以就是you need to do......。
have sth done 汉语是:让(某人)干某事。例如。You should have your hair cut.你该理发了。(也就是你该让理发师给你理发了)
I had my bike repaired yesterday. 昨天我修了下自行车。(也就是我让修车师傅给我修了车)
第二个问题:
Every minute and every second should be made full ___of___the finails.这是个被动语态,它的主动语态是:We should make full use of every minute and every second (to prepare for the finals).这儿是短语make full use of........to do sth. to do sth动词不定式作目的状语,和前面的介词of没有关系,不过改成被动语态后与of靠着了。
满意请采纳,希望对你有帮助。

网友(3):

1.have sth +过去分词。叫人做某事,经常用在动作的发出者不知道或不需提及。选项D中的to可省略。至于你讲的need doing/need to be done,注意句子的主语通常是物。即sth need doing/to be done.
2. 你把句子改成主动就是:you should make full use of every minute and every second to prepare for....
然后把every minute and every second作为主语改成被动。想一想,不懂再问!祝你进步!