11. Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.
A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientist learned how to synthesize合成the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists
给的答案是C,我认为是D。因为我觉得主动优于被动。大家看呢?
这个题目我第一遍也选的D,但是现在觉得C比D好
感觉D的含义和C不同
D是说-科学家在学习合成hormone之前要先做另外一件事,没体现出原题的意思
不知对不对,请NN指点~!
还是不太明白,不过谢谢Abbigail_all的解答,我再想想。
偶觉得这个D最大的问题在于it的指代。
D里的it应该指代synthetic growth hormone(合成的 growth hormone), 但从逻辑上讲应该指代the growth hormone,因为在合成以前是没有synthetic growth hormone的。
11. Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.
A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientist learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. Learning how to synthesize the growth hormone, it have to be painstakingly removed by scientists
A: make a synthetic不如直接用动词synthesize有效率;后半句不是完整句,主从句关系不成立
B: before加过去完成时没有道理,learn这个动作实际应该在主句动词时间之后
C: correct
D: 从原句逻辑上看,句意中的hormone并不是被同一群科学家使用,而是表述了一种历史事件之后,hormone就可以被后来的所有人怎样怎样了,所以D从逻辑上有问题。
E: learning的逻辑主语不是hormone
注意:
1、 此题很难,要从逻辑上判断意思,以后遇到主动、被动时态的考点,一定要区分清楚施加对象和被施加对象的合理逻辑关系。什么时候用被动?当找不到主动动作发出者时,一定用被动!
2、 还有Before介词+doing,和让步状语从句的省略+doing的区别,When/while(时间)/if/unless(条件)/even though/even if/although(即使)/once+名词/形容词/完整句
关于第2点,区别是什么呢?
斑竹的解释很经典,还有另外一个错误
before介词不能加doing(不构成让步状语从句),只能加时间点
What do you mean by before介词不能加doing, do you mind eleborating on this point?
2、 还有Before介词+doing,和让步状语从句的省略+doing的区别,When/while(时间)/if/unless(条件)/even though/even if/although(即使)/once+名词/形容词/完整句
关于第2点,区别是什么呢?
同问
并求让步状语从句的省略+doing的例子
偶觉得这个D最大的问题在于it的指代。
D里的it应该指代synthetic growth hormone(合成的 growth hormone), 但从逻辑上讲应该指代the growth hormone,因为在合成以前是没有synthetic growth hormone的。
这个解释是正确的
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