The coordinating conjunction of use is also flexible and easy to confuse. 其中并列连词运用灵活并且容易混淆。
The main factor preventing the English comitative preposition from evolving into a coordinating conjunction is persistence and it is the syntactic position that ultimately prevents the Chinese comitative preposition from developing into a coordinating conjunction in the sentence degree. 导致英语伴随介词没有演变成并列连词的主要因素是语义滞留原则,导致汉语伴随介词最终不能发展成句级并列连词的原因是句法位置的制约。