“on the point of doing”是什么意思？

“on the point of doing”的意思：表示正要做某事之时。

造句：

1、I was on the poing of leaving home when the phone rang.

2、I was on the point of leaving when the telephone rang.

3、he was on the point of going out ,while i came to see him.

4、He was on the point of leaving for somewhere when the bell suddenly rang.

5、I was on the point of telephoning him when his letter arrived.