nǐ 你 you shén mo shí hou 什么时候 when huí jiā 回家 go home shuì jiào 睡觉 go to bed chī wǔ fàn 吃午饭 have lunch nǐ shén mo shí hou huí jiā ? 你什么时候回家？ When will you go home? nǐ shén mo shí hou shuì jiào ? 你什么时候睡觉？ When will you go to bed? How to say"when will you have lunch"in Chinese? Who can tell me?