Whereas the use of synthetic fertilizers has greatly expanded agricultural productivity in many parts of the world, the increased usage of these fertilizers can create serious environmental problems such as water pollution, while if substituted for more traditional fertilizers, this substitution may accelerate soil structure deterioration and soil erosion.
语法 Sentence Correction-3374
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正确的用户笔记
ithoney 2015-10-10 10:25:39
while if substituted for more traditional fertilizers,后面接的句子主语应该是substituted修饰的 fertilizer 而不是 this substitution
lyqsunny 2014-06-27 14:23:33
最先把答案锁定在DE里面，所以错了 use和usage都是名词，不能排除AB Dwhile表示转折 Cthey表达不清楚
Estaaa 2015-10-29 12:00:36
"while if substituted for more traditional fertilizers, this substitution..." Notice the first part of that, before the comma - it never actually mentions what is being substituted, either via a noun or pronoun. This is a modifying clause. The modifier is meant to modify "synthetic fertilizers" which is a noun, so this is a noun modifier - and noun modifiers must touch the noun they modify. But "this substitution" follows the comma, not "synthetic fertilizers" (or some other noun or pronoun that refers to synthetic fertilizers). No good. Eliminate D.
停不下来的雕兄 2016-12-20 22:08:27
if you precede a clause with an initial modifier that doesn't have a subject, then the noun IMMEDIATELY FOLLOWING THE COMMA is automatically assigned as the subject of that modifier. while省略的主语是this substitution
ailing1004 2016-11-28 20:20:36
this substitution 很啰嗦，没有必要反复。 从句的主语跟主句的主语很平行。
sasazz 2016-11-14 10:49:39
RON: if you precede a clause with an initial modifier that doesn't have a subject, then the noun IMMEDIATELY FOLLOWING THE COMMA is automatically assigned as the subject of that modifier. so: in this choice, you're saying, weirdly enough, that 'this substitution' is 'substituted' for more traditional fertilizers. that doesn't make sense, as i'm sure you'll agree.
糯米团子QUQ 2016-10-06 22:13:12
while if substituted for more traditional fertilizers, this substitution此处主语有问题，if synthetic fertilizers被替代，所以应该是synthetic fertilizers做主语。【主从句，if从句要进行省略，必须两个句子主语相同且从句动词为be动词。】
yaomaczhang 2016-09-24 05:30:12
主语省略了，做修饰也不对
shisu0610041 2016-09-15 14:21:53
while if substituted for more traditional fertilizers,后面接的句子主语应该是substituted修饰的 fertilizer 而不是 this substitution 。省略的前提是主语相同
huiminzi1124 2016-06-20 15:30:25
错误1：the use of 使用；the usage of 用法。错误2:while if substituted for...前面没有提到什么被替代了，逗号后面是this substitution...也没有提到什么背替代了。其实应该是synthetic fertilizers被替代了。所以，以后看到前后两头都没有指明清楚所修饰的名词，算错！ usage的意思是用途和用法，改变了use of fertilizer的含义
ypheroin 2016-06-17 19:32:51
if substituted... this substitution... no logic subject for v-ed; while introduce an adverse meaning which is not the intended meaning of this sentence.
huiminzi1124 2016-06-10 14:09:45
usage的意思是用途和用法，改变了use of fertilizer的含义
kristy16s 2016-05-25 00:26:14
错误1：the use of 使用；the usage of 用法。错误2:while if substituted for...前面没有提到什么被替代了，逗号后面是this substitution...也没有提到什么背替代了。其实应该是synthetic fertilizers被替代了。所以，以后看到前后两头都没有指明清楚所修饰的名词，算错！
