请高手解释一下这道题,谢谢

2025-02-27 12:31:58
推荐回答(2个)
回答(1):

The kids lay face down on the beach, their backs________ to the sun.
A.exposing B.exposed C.having exposed D.were exposing

本题答案:B.exposed

后面是作伴随状语的,其实整个句子相当于
The kids lay face down on the beach with their backs exposed to the sun.

with sth done 表示持续的某种状态

★ 独立主格结构:

一、概念:
“独立主格结构”是由名词或代词作为逻辑主语,加上分词、形容词、副词、动词不定式或介词短语作为逻辑谓语构成。这种结构在形式上与主句没有关系,通常称为“独立主格结构”。

二、功能:
“独立主格结构”实质就是带有自己主语的非限定状语从句。众所周知非限定性从句通常以主句的某一成分作为自己的逻辑主语,从而依附于主句。而有些非限定性从句和无动词从句带有自己的主语,在结构上与主句不发生关系,因此成为独立主格结构。其实,虽然叫做独立主格结构,并不是真正的独立,它还是一种从属分句,在句中有多种作用。如:表原因、表条件、表方式、表伴随、表时间等,在句中通常起状语作用。

三、形式:
独立主格结构在形式上有两部分组成:第一部分有名词或代词担任,第二部分由分词、动词不定式、形容词、副词、或介词短语担任。按其结构形式分为:—ing 分词独立主格结构;—ed分词独立主格结构;无动词独立主格结构等。

四、举例:
1、There being nothing else to do, they gone away.
由于无事可做,他们离开了。(代词+-ing; 表原因)

2、Miss Wang come into the classroom, books in hand.
王老师走进教室,手里拿着书。(无动词结构;表伴随)

3、The old man sat in his chair, his eyes closed.
老人坐在椅子上,闭着眼睛。(名词+-ed; 表状态)

4、Class over, we began to play basketball.
放学了,我们开始玩篮球。(名词+副词;表时间)

5、Without a word more spoken, he picked up the paper.
没再多说一个字,他拾起那张纸。(介词结构;表伴随)

6、The last guest to arrive, our party was started.
最后一位客人到了,我们的晚会开始了。(名词+不定式;表时间)

五、独立主格结构与分词短语作状语的异同:

1、独立主格结构与分词短语都可以转化成状语从句。但是,独立主格结构转换成状语从句后,有自己的逻辑主语,与主句的主语不一致;而分词短语转化为状语从句后,从句的主语与主句的主语相同。例:

⑴ If time permit, we’d better have a rest at this weekend. -→Time permitting,we’d better have a rest at this weekend.
如果时间允许,本周末我们最好休息一下。

⑵ When we see from the top floor, we can find the garden more beautiful. -→Seeing from the top floor, we can find the garden more beautiful. 从顶楼上看,花园更漂亮。

2、 还应该注意,分词结构的逻辑主语不是总和主句的主语一致,而是主句的其他成分。语法上称作“依着原则”;有些分词结构在句子上找不到它的逻辑主语,语法上称作“悬垂分词”。例:

⑴ Looking for my watch in the room, it had taken me a long time. 在屋里找表,用了我很长时间。(依着原则)

⑵ When planting these flowers, care must be taken not to damage the root. (我们)种花时必须小心,不能碰坏花根。(悬垂分词)

六、独立主格结构与独立成分的异同:

1、有的分词短语可以独立存在,在句子中没有逻辑上的主语,实际上已经成了习惯短语。这些短语有:generally speaking; frankly speaking; judging from; supposing等等。
例:

⑴ Generally speaking, the rule is very easy to understand.总的来说,这个规则很容易懂。

⑵ Judging from what he said, she must be an honest girl. 根据他所说的,她一定很诚实。

2、有些固定短语是带to的不定式,表明说话人的立场和态度,在句中作独立成分。这些短语有:to be honest; to be sure; to tell you the truth; to cut a long story short; to be frank; to make the matter worse等等。例:

⑴ To tell you the truth, what I said at the meeting was not my opinion. 说实话,我在会上说的并不是我的意见。

⑵ To make the matter worse, he locked his keys in the car. 更糟糕的是,他把钥匙锁在车里了

★ 过去分词和现在分词被动式的区别:
两者均可表示被动,其区别主要在于它们所表示的时间概念不同,即过去分词在被动的同时,还表示完成,而现在分词被动式在被动的同时,还表进行。

Built in 1501,the bridge is over 500 years old. 这座桥建于1501年,已有五百多年的历史。

Who is the woman being operated on? 正在动手术的女人是谁?

但有时它们也可表示相同的意思。如:

Written in haste, the book has many mistakes. 这书因写得仓促,所以错误不少。

Being written in haste, the book has many mistakes. 这书因写得仓促,所以错误不少。

Having been written in haste, the book has many mistakes. 这书因写得仓促,所以错误不少。

有时虽然所表示的时间概念相同,但有细微区别:

Having been show the lab, we left. 被领着看了实验室后,我们就离开了。

Shown the lab, we left. 被领着一看完实验室,我们就离开了。(有一种急促感)

回答(2):

这是独立主格结构,在句中做伴随状语。句意是:孩子们脸朝下躺在长凳上,后背裸露着晒着太阳。因为backs与expose之间是被动关系,所以要用过去分词表被动。换个方式解释,应该说,The kids exposed their backs to the sun. 过去分词和现在分词被动式都有被动之意,但所表达的时间意义不同。过去分词只强调被动关系或强调过去或完成被动;而现在分词被动式则强调进行被动。

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