作业帮to后面到底什么时候才加be?took almost every means she could find to practise these high notes.a site had to be found for it and pedestal had to be built.上面这2句话中,为什么第一个find to 后面没有加be啊?she did not want to b
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/28 12:42:55
to后面到底什么时候才加be?took almost every means she could find to practise these high notes.a site had to be found for it and pedestal had to be built.上面这2句话中,为什么第一个find to 后面没有加be啊?she did not want to b
to后面到底什么时候才加be?
took almost every means she could find to practise these high notes.
a site had to be found for it and pedestal had to be built.
上面这2句话中,为什么第一个find to 后面没有加be啊?
she did not want to be heard之中，我可以吧did看做是助动词，所以加了be,可以这样理解吗？
to后面到底什么时候才加be?took almost every means she could find to practise these high notes.a site had to be found for it and pedestal had to be built.上面这2句话中,为什么第一个find to 后面没有加be啊?she did not want to b
这个 是主动与被动的问题
第一个句子中 practise these high notes 主语应该是人 是主动做 所以直接加动词原形
第二个句子 a site had to be found 中 a site 是主语 但实际上 是a site 被人们找到发现 表示被动 所以 用be found
to 在这些例句中是不定式标志，不定时TO后面该加什么就什么。
to practise 是主动，而 to be built 是被动，所以前者不加be而后者就要加。