I saw a boy crying/cry in the street this morning,so i went to ask what the matter was.

问题描述:

I saw a boy crying/cry in the street this morning,so i went to ask what the matter was.

crying
今天早上我看到一个正在街上哭泣的男孩,因此我走过去问他怎么了

I saw a boy crying in the street this morning, so i went to ask what the matter was.
see sb doing sth 表示看到某人正在做某事
希望能够帮到楼主