[动词时态]seeing saw seen
look (v. 看)：侧重短暂的看的动作，但并不一定能看见，有时用来唤起别人的注意。
observe (v. [正式]看（到），观察（到）)：指注意到某事物，或为了解某人、某事而对其进行仔细观察。
see (v. 看见，看到，观看)：侧重看的结果；也指眼睛看得见或观看比赛、电视节目等。
watch (v. 注视，观看)：指在一段时间内关注某人或某事。
◇ If the Queen sees you, she will make some other man kill you.
---- Snow White
◇ but when the Rabbit actually TOOK A WATCH OUT OF ITS WAISTCOAT-POCKET, and looked at it, and then hurried on, Alice started to her feet, for it flashed across her mind that she had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it, and fortunately was just in time to see it pop down a large rabbit-hole under the hedge.
◇ It was larger and more beautifully decorated than the one which she had seen through the glass door at the rich merchant's.
◇ The duckling had never seen anything so beautiful.
---- The Ugly Duckling
◇ And the sun shone so clearly, and straight before her stood the angel of God in white garments, the same she had seen that night at the church door;
---- The Red Shoes
◇ The three peas were however put into the cabinet ofcuriosities, where they are still to be seen, provided they are not lost.
---- The Real Princess