Experts say having to change the tape daily or remove it when those babies are well enough to go home can be painful and even dangerous. 为什么是having而不是have;when在这里是定语从句的关系词吗 ?谢谢~~
have是动词原形,不能做主语,这里是用其动名词having的形式,充当从句主语的成分。
句子成分如下。
Experts(主语)
say(谓语)
having to change the tape daily or remove it when those babies are well enough to go home can be painful and even dangerous.(宾语从句)
其中宾语从句的成分分析是:
having to change the tape daily or remove it (主语,涉及到have to do sth. and/or do sth. 的结构)when those babies are well enough to go home (时间状语从句)can be(谓语) painful and even dangerous.(and连接两个表语)
若理解请采纳。
那请问在这个句子中 to change 是做一个不定式 而不是 haveing to 对吗? when既然是关系副词 那它修饰的表时间的名词是哪个?谢谢~
追答不好意思,when引导的是时间状语从句;话说,根据我的理解,have to是一个词组,因为一句话不能有两个谓语动词才变成动名词的。