Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies when they taste the hydrocarbons on prospective mates in distinguishing their own species from those of others.
语法 Sentence Correction-4222
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正确的用户笔记
piupiu雨雨 2014-11-05 15:52:33
this不能用于指代前句描述的事情
ChessyG 2016-12-08 10:11:26
this/that/which 都不可以指代前面一整句然后引出结果，所以最有效的表达应该是伴随性
old4gaming 2015-09-21 21:05:58
this不能指代前面的句子！
Yourr 2016-07-10 15:53:01
and 没有主语 而且前后并不对称
snow199511 2016-06-22 20:37:02
1.this 2, others包含前面所指
yiiiiiiiiii 2016-03-07 11:41:02
this不能指代前面的句子 species为单数，those指代不对 others包含前面所指，不用再加that of
