He preferred rating a car to having one of his own. He prefers to rent a car rather than to have one of his own. 这个句子有什么不同?第一句子为什么加ed,第二个加s'

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He preferred rating a car to having one of his own. He prefers to rent a car rather than to have one of his own. 这个句子有什么不同?第一句子为什么加ed,第二个加s'
He preferred rating a car to having one of his own.
He prefers to rent a car rather than to have one of his own.
这个句子有什么不同?第一句子为什么加ed,第二个加s'

He preferred rating a car to having one of his own. He prefers to rent a car rather than to have one of his own. 这个句子有什么不同?第一句子为什么加ed,第二个加s'
这个句子有什么不同?第一句子为什么加ed,第二个加s'
这是时态问题,第一个句子用一般过去时表达,所以动词后面接ed,第二句用一般现在时表示,he是第三人称单数,所以动词prefer用单三形式,加s.至于句子用什么时态,要根据具体语境来分析.这里没有给出具体语境.只能说第一句话是过去发生的事情,第二句表达陈述的事实.
第一个句子使用prefer doing sth to doing sth 宁愿选择.也不选择.
第二个句子使用prefer to do sth than (to) do sth 与.相比更喜欢.,to可省略.
上面两个句型都要使用平行结构,即如果前面使用动词不定式,后面也要使用动词不定式,如果使用动名词,就都要使用动名词.