1. worked on 從事···

例句：while Sam worked on a self-portrait, his chubby hands drawing first a head, then legs and arms sticking out where the body should have been.
湯姆正忙著畫自畫像，他胖乎乎的小手先畫了一個頭，然后在應當畫身體的位置畫了腿和胳膊。

2. concentrated on 全神貫注于···，專注···

例句：The children mostly concentrated on their work, Tom occasionally tutoring his younger brother on excatly how to make a plane that would fly the entire length of the room.
孩子們都全神貫注地忙著手上的活兒，湯姆不時地告訴弟弟怎樣正確地制作一架能夠穿行于整間屋子的飛機。

3. engrossed in sth 聚精會神···

例句：But Laura, our only daughter, sat quietly, engrossed in her project.
我們唯一的女兒勞拉靜靜地坐在那里，聚精會神地忙著她的事。

4. finish off 結束某事，吃光

例句：She finished off each with a sun in the upper right hand corner,surrounded by an inch or two of blue sky.
每完成一頁，她都會在右上角處畫一片藍天，中間是太陽。

5. glance at瞥一眼，朝··看一眼

例句：She glanced at her brothers beofre looking back at me.
看我之前她瞥了一眼她的兄弟們。