1.当意识到自己的失败,他突然间哭了起来（break into）
When realizing his failure,he broke into crying
2.确认自己能够按时完成工作,他先休息了会儿（sure that）
To make sure that he could finish the work on time,he had a break first
3.跟朋友聊天的时候,他突然看到了桌上的信封（catch sight of）
When chatting with the friends,he caught sight of the letter on the desk
4.我爸爸喜欢吃好饭去公园里溜达（wander）
My father likes wandering in the park after dinne