To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by.
To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by.
Estimating the expansion rate of the universe is a notoriously difficult problem because there is no single yardstick by which all distances can be measured.
Because there is a lack of a single yardstick to measure all distances by, estimating the expansion rate of the universe is a notoriously difficult problem.
A notoriously difficult problem is to estimate the expansion rate of the universe because a single yardstick is lacking by which all distances can be measured.
It is a notoriously difficult problem to estimate the expansion rate of the universe because by no single yardstick can all distances be measured.
题目分析:此题存在一个因果联系。即“因为没有标尺,所以估计宇宙的膨胀速度是个难题”。
选项分析:
A选项:because之后跟着一个there be句型,其核心成分为“there is a lack”,即“这里有一个缺少”。但直接导致“估计速度是个难题的”应该是“没有标尺”这件事,而不仅仅是“这里有个缺少”。
B选项:正确。because之后的核心成分为“there is no yardstick”,即“这里无标尺”。
C选项:there is a lack错误同A。
D选项:此选项的字面意思为“因为标尺正在缺少,所以难题 是 预估速度这件事”。很明显,“正在缺少”这一进行时是不合理的,且“标尺缺少”导致的应该是“ 预估速度这件事 是 难题”,而不是“难题 是 预估速度这件事”。
E选项:主句中,it作形式主语,指代“预估速度”这件事。原因状语从句中,是一个倒装,还原一下为“all distances can be measured by no single yardstick.” 其字面意思为“所有的距离可以被 没有任何一个标尺 测量 ”。那么整句话的核心意思为“因为被测量,所以是难题”。但合理的应该是“因为没标尺,所以是难题”。
否定副词前置引起的倒装,如:Not every day do we have such luck.=We don't have such luck every day.;Not until you are married will I stop waiting for you.;
地点词前置引起的倒装,如:There is a book on the dest.; In Loch Ness dwells a mysterious monster.; Among the best writers is she.;To the west of Japan lies China.
引述内容提前造成的倒装,如:The wind was too heavy, the walker said.或said the walker
省略if的倒装:Were I you, I ……
没有宾语前置的倒装,D错误
A. B. 过 测量宇宙扩张是一个臭名昭著的问题
C 调了语序 也过
D 一个臭名昭著的问题是要测量。。。不太对
E 形式主语it is ... 也得过
读完了之后,A/B/C/D/E 都让他过,测量宇宙扩张是一个困难的事情,因为xx
看后面
A 有一个缺失
B 没有尺
C 有一个缺失
D 一个尺不在
E 不能量
e改变了句意
提句子主干,从语意角度判断哪个选项的主干部分更合理
我个人认为,这里没强调有任何一个团体或某人to estimate的困难,而是客观地说Estimating the expansion rate这件事,所以要用ing形式。不知道能不能帮到你;)
你说得对,to do表示状态的转换,但这里不是说转换到评估这件事情很难,而是说评估的过程本身很难,或者说这件事情很难。谢谢你哇^_^
不客气~你在其他题的见解也帮到了我,很喜欢你!☺️登录 或 注册 后可以参加讨论
because all distances can be measured by no single yardstick.这里没有衡量标准在because里做状语,但它是导致不能评估宇宙的扩展速度的直接原因,应该做because的主语。
让no single yardstick 做主语,再把句子倒装就可以了。
相同的疑惑...我感觉E逻辑和语法上都没啥错误...
可能把all 改成any就可以了吧
用E的倒装方法去强调没有标尺的话,要改成: It is a notoriously difficult problem to estimate the expansion rate of the universe because no single yardstick can be used to measure all distances. =To estimate the expansion rate of the universe is a notoriously difficult problem because…….E既不是倒装错了,也不是all错了,它是成分用得不对。no single yardstick 是造成它困难的原因,应该作句子的主要成分(主语或宾语),B把它用作原因状语从句的宾语,E 把它用作原因状语从句的状语,处于从句的第二层,类似于把一个重要的元素藏在一个句子的小角落,不便于说话者达意,也不便于听者/读者理解。
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还要注意there be句型造成的意思的不同
2.there be句型,其核心成分为“there is a lack”,即“这里有一个缺少”。但直接导致“估计速度是个难题的”应该是“没有标尺”这件事,而不仅仅是“这里有个缺少”。
3.is lacking 不必要使用
倒装只是成分的顺序变了 但每个成分的“职责”是不会变的~每个句子的核心一定是谓语动词哟
哦哦这样,谢谢您~登录 或 注册 后可以参加讨论
E选项It is +adj. +to do而不能It is +n. +to do
B there is a single yardstick by which all distances can be measured
E all distances can be measured by single yardstick
意思不同