1,Hewastocrosstheroadwhenacarsuddenlyracedtohim.（在was后面加about,.我们知道was+动词不定式也可以表示将来为什么这里要用wasaboutto表将来呢?）2,Shesaidshewasgoingtocomewhenhermothertoldhersupp

Question

1,He was to cross the road when a car suddenly raced to him.（在was 后面加about,.我们知道was+动词不定式也可以表示将来为什么这里要用was about to 表将来呢?）
2,She said she was going to come when her mother told her supper was ready.（was going to come改为 coming）.
希望老师从语法的角度细解释,

Answer 1

1、be about to+动词不定时,固定用法
2、was going to come