When Jo came in America he went to school to learn English. His first lesson was about the time. After that course he knew the time in English. When we asked him  for the time he always said the right answer. For example : six thirty  ( 6:30 ), eight ten (  8:10 ). He went to the store to buy a pair of  sneakers. When somebody at the store asked him for his size. He said my size is nine thirty