示例：
Helen : When do you go to school?
Wang Bing: I go to school at seven forty.
Helen : When do you have lessons?
Wang Bing: I have lessons at eight fifty.
Helen : When do you have lunch?
Wang Bing: I have lunch at eleven fifty.
Helen : When do you go home?
Wang Bing: I go home at four twenty
Helen : When do you do your homework?
Wang Bing: I do my homework at seven.
Helen : When do you go to bed?
Wang Bing: I go to bed at eight.
