作业帮 > 英语 > 作业

The firemen saw the fire.The firemen began to fight against

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/30 00:46:05
The firemen saw the fire.The firemen began to fight against the fire.(合并一句)
--------- ---------- the fire,the firemen began to against the fire.
On seeing the fire,the firemen began to against the fire.
一看见,就开始灭
那就给你解释下吧:
on作为介词有这种用法
表示:在...的时候,在...后立即
比如:He jumped with joy on hearing the news.
他一听到这个消息就高兴得跳了起来.