It seems that man was making a real effort to understand the
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.、、 that是什么从句 to understand the seasons 20,000 years earlier 是不定式作定吗
It主语 seems系动词 that从句是表语从句 it是人称代词,没有什么实际意思.it seems that译成“(情况)看来……” 比如:It seems that he will come tonight.可改成:He seems to come tonight. 不定式是做目的状语,相当于in order to understand...
seem 及物动词:意思是:seem to be true, probable, or apparent。 that引导的是宾语从句。 to understand the seasons 20,000 years earlier 是不定式作目的状语,表示making a real effort 的目的。