five years old. → How old is your sister?
D、对“颜色”划线，用What colour。 
  Her sweater is red. → What colour is her sweater? 
E、对“可数名词的数量”划线用How many +复数名词。
  She has one red coat. → How many red coats does she have?
  I have six books. → How many books do you have?
F、对“不可数名词的数量”划线用How much+不可数名词。
　I want to buy three kilos of meat. →How much meat do you want to buy?
G、对“职业”划线用What。 
  She is a driver. → What is she?
  My father is a farmer. → What is your father?
H、对“星期几”划线用What day。
　It's Sunday today. → What day is it today?
I、对“时间”划线用What time。
　We go to school at seven in the morning. → What time do you go to school in the morning?
  It is five o’clock now. → What time is it?