In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.
In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.
(A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve
(B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve
(C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving
(D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve
(E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving 答案是D,笔记解释说E的分词作伴随状语有歧义,但是不是说现在分词在句尾就是表伴随动作与句子谓语同时发生,逻辑主语就等于句子主语嘛,怎么会有歧义呢?
PREP SC 96 In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer. (A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve (B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve (C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving (D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve (E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving
主句中的主语是 'the number',根据主谓一致的原则,排除A 和E项。
保留 B C D三项。
B项中,‘which can be serve ...' ,对其语法功能,这里存在两种解释:
case 1 which 可能指称句子 'the number...raises and falls...',意思是蟋蟀鸣叫的频率随温度变化,这样的一个机制可以被用作温度计。 但是,which单独来讲是疑问代词,不是指示代词。当需要指代上文中的句子的时候需要用 that。 比如:2 square is 4, that is to say, 2 times 2 is 4。这里的 that is to say是插入语,意思是换句话说,that 指代前一个句子。 所以 case 1 不合法。
case 2 which 引导了定语从句。根据句义,我们可以判断其先行词是上文中 'the number' 。 但是,这样的话现行词和从句距离太远,而且逻辑主语 the number 在从句中仍然是主语,应该使用平列的形式 and it (指的是the number) can serve...。 所以 case 2 不合法。
排除B
现在我们来分析 C 和D 的区别:
举个例子 #1 The langth of the road lamp's shaddow decreases and increases as the Sun moves in the sky during the day, and it can actually serve as a clock. #2 The langth of the road lamp's shaddow decreases and increases as the Sun moves in the sky during the day, in fact possibly seaving as a clock.
#1 句中,it指称the langth。it can serve as a clock,意思是那变化着的日影长度可以用来当做钟表(指示时间)。 这里的 ‘可以用来’,表示的是客观的一个事实,对一种能力的肯定,什么能力呢,就是可以指示时间的能力。 #2 句中,serving as a clock,作伴随状语,表示变化的日影长度可能始终发挥着指示时间的作用,是对一种现象的描述。 这就体现了it can serve 和 possibly serving的区别
再举个例子: #3 A small Taobao store is set up by the wife of the mayor, in fact possibly serving as a method of money-laundering. 市长的夫人开了一个小的淘宝店,事实上可能发挥着洗钱的作用。 #3 表达了对于市长夫人主观意图的揣测。(事实上只要淘宝店发挥了洗钱的功能,那肯定就是主观故意)
PREP SC 96 In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer. (A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve (B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve (C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving (D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve (E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving
主句中的主语是 'the number',根据主谓一致的原则,排除A 和E项。
保留 B C D三项。
B项中,‘which can be serve ...' ,对其语法功能,这里存在两种解释:
case 1 which 可能指称句子 'the number...raises and falls...',意思是蟋蟀鸣叫的频率随温度变化,这样的一个机制可以被用作温度计。 但是,which单独来讲是疑问代词,不是指示代词。当需要指代上文中的句子的时候需要用 that。 比如:2 square is 4, that is to say, 2 times 2 is 4。这里的 that is to say是插入语,意思是换句话说,that 指代前一个句子。 所以 case 1 不合法。
case 2 which 引导了定语从句。根据句义,我们可以判断其先行词是上文中 'the number' 。 但是,这样的话现行词和从句距离太远,而且逻辑主语 the number 在从句中仍然是主语,应该使用平列的形式 and it (指的是the number) can serve...。 所以 case 2 不合法。
排除B
现在我们来分析 C 和D 的区别:
举个例子 #1 The langth of the road lamp's shaddow decreases and increases as the Sun moves in the sky during the day, and it can actually serve as a clock. #2 The langth of the road lamp's shaddow decreases and increases as the Sun moves in the sky during the day, in fact possibly seaving as a clock.
#1 句中,it指称the langth。it can serve as a clock,意思是那变化着的日影长度可以用来当做钟表(指示时间)。 这里的 ‘可以用来’,表示的是客观的一个事实,对一种能力的肯定,什么能力呢,就是可以指示时间的能力。 #2 句中,serving as a clock,作伴随状语,表示变化的日影长度可能始终发挥着指示时间的作用,是对一种现象的描述。 这就体现了it can serve 和 possibly serving的区别
再举个例子: #3 A small Taobao store is set up by the wife of the mayor, in fact possibly serving as a method of money-laundering. 市长的夫人开了一个小的淘宝店,事实上可能发挥着洗钱的作用。 #3 表达了对于市长夫人主观意图的揣测。(事实上只要淘宝店发挥了洗钱的功能,那肯定就是主观故意)