1.My brother could nothing but read books 2.he has no alternative but to go to see her.
问题描述：
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?
答
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.