We can tell the time by clock or by watch(手表). A clock is big, and it is usually on the wall. A watch is small, and we can put it in the pocket(口袋), or wear it on the wrist(手腕)! A clock or a watch usually has a round (圆的)face. It has two hands, a long one and a short one. My clock can call me to get up every day. My watch has a cute dog on the face. I like it very much.