have ,was解釋??

His speech was a powerful spur to action.

點解用was(是), 唔用had(有)? was = 是

This is a metaphor. 隱喻 (一種修辭法)

他的言辭是強有力的激勵。

speech (subject) <===> spur (subject complement)
Therefore, we should use the linking verb (to be) in the above sentence.

His speech was a great encouragement. (noun)
His speech was very encouraging. (adjective)
His speech had an encouraging effect.

呢句吾系解...
他的講話是激勵性的說話咩?!(以我理解..)


英文同中文有別阿..