1.My brother could nothing but read books 2.he has no alternative but to go to see her.这两个句子中but后面的用法有什么不同,为什么第二个句子是to do形式?
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原句应该是My brother could do nothing.你漏掉了一个词吧.
but to do 是‘除了做……’.如果句中有实义动词do 时,省略to
He did nothing but watch TV.
I have no choice but to stay at home.
======以下答案可供参考======
供参考答案1:
第一个but 后面的to 是省略了,因为could,情态动词。第二个句子是but的正统用法，have ...but to do sth.