Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, apparently assisting flies to taste the hydrocarbons on prospective mates to distinguish their own species from those of others.
语法 Sentence Correction-4224
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正确的用户笔记
ypheroin 2016-01-17 22:35:21
做题时根本没有理解题意，还纠结assisting是修饰courtship（求爱），显然是在修饰HCBN。这句的错误： 1. assist in doing sth； 2. taste the HCBN 是修饰flies，而不是assist的状语，所以用that 定语从句更好，distinguish 是assist的状语，这里却更像修饰taste。
Lottieeee 2016-10-19 17:14:45
D is wrong because if we say "their own species from those of others" so those refers to species or technically to whole "their own species " or there are other errors in D. the original meaning is that hydrocarbons assist those flies that happen to taste them in species identification. - choice d asserts that hydrocarbons somehow help flies to taste hydrocarbons (other ones?) with the intention** of species identification, which is a whole different ballgame.
西西瓜 2014-10-22 19:29:40
改变句意，不过这个句子也真是够难。
小揪揪 2016-12-20 10:41:20
D. assist习语搭配不正确;选项改变了原句的动宾关系：to taste作assist的宾语，to distinguish作taste的宾语，完全改变了句子意思;those没有指代对象，即使改为that，也不正确 assist (somebody) with/in something, assist in doing somethingwhich、this不能用于指代前句描述的事情 E对
yaomaczhang 2016-10-03 23:05:29
assist in doing sth 物种和其他物质区分
shisu0610041 2016-09-18 10:34:26
句意来解释就是，D：这种物质帮助苍蝇去尝味，尝味是为了分辨别人。 E：这种物质帮助尝味的苍蝇去分辨别人。 1. 弄清楚比较对象，distinguish A and B. AB要平行。 区分自己和其他物种。如果加了those，变成those of others, others=other species,这里those也不能指代。而且species是单数，those也不能指代。
金子0913 2016-07-27 18:03:10
those 没有指代， others 代表了 other species
snow199511 2016-06-22 20:39:05
1. assist sb to do sth to do 2. those of others = redundacy
huiminzi1124 2016-06-09 23:50:20
正确的习语搭配为：assist (somebody) with/in something, assist in doing somethingwhich、this不能用于指代前句描述的事情
IAMBACK 2016-06-09 09:47:45
正确的习语搭配为：assist (somebody) with/in something, assist in doing somethingwhich、this不能用于指代前句描述的事情
siasiasia 2016-04-07 22:31:52
assist sb in doing sth；those of没有指代
yiiiiiiiiii 2016-03-07 11:45:06
species为单数
