The behavioral sciences have been slow to changepartly because the explanatory items often seem tobe directly observed and partly because other kindsof explanations have been hard to find.
译文:
行为科学之所以发展缓慢,一方面是因为用来解释行为的依据似乎往往是由直接观察而来的,另一方面是因为一直很难找到其他解释。
点睛:
该句的主干是The behavioral sciences have been slow to change...,表语形容词后的动词不定式tochange可以叫做宾语。两个because引导的原因状语从句由and连接,构成并列结构。
考点归纳:
动词不定式可以跟在充当表语的形容词之后,这样的不定式可以叫做宾语,具体如下:
*在表情绪的形容词之后
I'm eager to see my friends.
我急于见到我的朋友。
*在表状态的形容词之后
She is determined to go back to work.
她决心回去上班。
*在表品质的形容词之后
You are brave to act like that.
你那样做很勇敢。
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