I'm sorry to hear that. 这个句子的to hear在句子中做什么成分?

问题描述:

I'm sorry to hear that. 这个句子的to hear在句子中做什么成分?

宾语, 也有看成是原因状语的。

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原因状语.再看看不定式作原因状语的例句1.They jumped with joy to hear the news.2.The children felt happy to be with their parents.1.他们高兴地跳了起来 they jumped with joy ,原因是to hear the news听见这...