可以這樣省略，但不宜將to eat tomorrow理解為what的定語(yǔ)，這里是“連接代詞+不定式”結(jié)構(gòu)作賓語(yǔ)。　　

關(guān)于“連接代詞+不定式”結(jié)構(gòu)作賓語(yǔ)的例子很多。如：　　

Each man knows what to do. = Each man knows what she should do. 每一個(gè) 人都知道要做什么。　　

I didn’t know when to switch the machine off. = I didn’t know when I could switch the machine off. 我不知道什么時(shí)候關(guān)掉機(jī)器。　　

I don’t really know what to say to you about this. = I don’t really know what I can say to you about this. 我真的不知道關(guān)于這事我該對(duì)你說(shuō)些什么。