Any medical test will sometimes fail to detect a condition when its present and indicate that there is one when it is not.
A)
B) when a condition is present and indicate that there is one
C) a condition when it is present and indicate that it is present
D) when a condition is present and indicate its presence
E) the presence of a condition when it is there and indicate its presence
我选了D
Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not.
(A) a condition when it is present and indicate that there is one (one 干扰代词就近指代,最后一个it指代错误;one 是泛指,a condition 是特指)
(B) when a condition is present and indicate that there is one (原文是detect a condition,改成detect 一个时间错误;one错误同A)
(C) a condition when it is present and indicate that it is present (正确)
(D) when a condition is present and indicate its presence (when错误同B;indicate its presence when it is not的it错误指代)
(E) the presence of a condition when it is there and indicate its presence (前后的presence都是多余的:原文是detect a condition,不是detect the presence;its presence错误,变成了indicate condition's presence when condition is not present,应该是indicate condition when condition is not present)
句子结构: Any test will fail to detect a condition when it (代指condition) is present and indicate that | it (代指condition) is present when it (代指condition) is not (省略present).
不是大神,尝试来解答:
这句话的层次是这样:1)any medical test will sometimes fail to...when... and indicate...when...,and 前后是对比的关系。换言之就是fail to detect a condition when it is present v.s. indicate the condition is present when it is not (present)(当这个症状出来的时候没发现v.s.预测有这个症状的时候实际上没有)
A答案and前没有问题,但是后面哪个one有问题,因为都说的是a condition, 是一个特定的condition, 而不是一个泛指的condition, 而one是不定代词,指的是一群东西中的某一个或者指一个不定的东西 Manhattan SC 5th p234
BD 都有一个问题,少了a condition, 原句的意思被改变,是detect a condition而不是强调发现这个condition的时间
E 冗余,原句意思也被改变,发现的是a condition而不是the presence of condition, there没有先行词