The nucleus of the causative sentence is the causative verb.

原型致使句的核心是原型的致使动词。

The semantic role of instrument can be the subject in the middle clause of a causative verb.

工具语义角色可以在使役动词的中动语态语句中作主语。

Do you want to be able to recite the definition of a causative verb, or do you want to be able to speak English fluently?

你是想具有背诵使役动词含义的能力呢？还是想具有说出一口流利英语的能力呢？

Hence we can conclude as follows: (1) the basic classification of causative verb structure has been in a steady state all the time.

我们发现：(1)使令类兼语动词的基本类别一直保持在一个稳定的状态中。

English and Chinese form a superset-subset relation in terms of unaccusative verbs and psych verbs:English allows causative-alternating unaccusative verb, but Chinese does not;

就非宾格动词和心理动词而言，英语和汉语存在“超集—子集”关系：英语允许非宾格动词转换为使动动词，而汉语不允许；