What did you do on your last holiday不是病句，必须加on 希望能采纳，谢谢了 这是例句 What did you do on your holiday? 你假期中做什么？ Where are you going on your holiday? 你打算去哪度假？ Tell me what you did on your holiday. 告诉我你放假的时候做了什么。
上面我说错了 What did you do on your holiday 这样是对的 或者 What did you do last holiday这样也是对的 但是 What did you do on your last holiday 就是错的了 用了on就不能用last，用了last就不能用on
