We can tell time by a clock or by a watch. A clock is big, it is usually on the wall or on the table. A watch is small, we can put it in the pocket （衣袋） or wear it on the wrist （手腕）. A clock or a watch usually has a round face. It has two hands, a long one and a short one. Tom's clock can speak and call him to get up every day. His watch has a picture of a lovely dog on the face. He likes it very much.
