Is it first time for Amy to be late.这里为什么要有to be?

Is it first time for Amy to be late.这里为什么要有to be?
Is it first time for Amy to be late.这里为什么要有to be?

Is it first time for Amy to be late.这里为什么要有to be?
这不是to be= =||是 it's time for somebody to do sth 句型
be late 是另外一部分……
而adj是不能直接放在动词的位置上的,所以用了be
希望我讲清楚了~

late这做形容词，所以前面要有be;
It is adj for sb to do sth.这是固定句型

因为LATE不是动词...
是形容词~