Question

英语-请问这为什么用having heard?

When listening to the teacher, one of the students just interrupts the teacher and says " No offense, but by the time we're in the job market, won't that stuff be outdated?" Having heard this question, the teacher stops demonstrating the Multiplication Table and seems to be quite shocked and embarrassed.

Answer 1

那是the teacher发出的动作，而且是在听到问题之后，老师才发出主句所说的内容，有时间先后，所以用主动的完成时态having heared

Answer 2

这是现在分词的完成形式作状语 强调动作 发生在 谓语动作 stops之前

所以 用 现在分词的完成形式 Having heard

Answer 3

Having heard this question, the teacher stops .....用现在完成时态短语修饰主语teacher...

Answer 4

表顺序的一先一后啊！非谓语！你可能没学吧~