what are you doing for vacation? 与 when are you going on vacation? 为什么一个用for ，一个用on？
What are you going for vacation?\u548cWhere are you doing on vacation?\u8fd9\u4e24\u4e2a\u662f\u4e0d\u80fd\u8c03\u6362\u7684\u3002
Where are you going for vacation?
\u7ffb\u8bd1\u6210\uff1a\u4f60\u53bb\u54ea\u91cc\u5ea6\u5047 \uff1f
\u8fd9\u53e5\u91cc\u9762\u7684for \u662f\u8868\u793a\u76ee\u7684\u3002
What are you doing on vacation?
\u7ffb\u8bd1\u6210\uff1a \u4f60\u5728\u5047\u671f\u5e72\u4ec0\u4e48 \uff1f
\u8fd9\u53e5\u91cc\u9762\u7684on \u8868\u793a\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u3002
What are you going for vacation? \u662f\u9519\u7684\uff0c\u8981\u6539\u4e3a\uff1a
Where are you going for vacation?\uff08\u4f60\u53bb\u54ea\u91cc\u5ea6\u5047\uff1f\uff09 \u6216
what are you going to do for vacation?\uff08\u5047\u671f\u4f60\u6253\u7b97\u505a\u4ec0\u4e48\uff1f\uff09 \u610f\u601d\u548c What are you doing for vacation? \u4e00\u6837\u3002...going to do...\u6bd4\u8f83\u6b63\u5b97\uff0c\u8003\u8bd5\u4e00\u5b9a\u5f97\u7528\u5b83\uff1b ...doing... \u7528\u4e8e\u53e3\u8bed\u4e14\u5047\u671f\u9a6c\u4e0a\u5c31\u8981\u5f00\u59cb\u7684\u573a\u5408\u3002
第一句应该是：
What are you doing for THE / YOUR vacation? --------for 强调整个时间段。
或者是：
What are you doing during THE / YOUR vacation? -------- during 强调这个时间点
第二句when are you going on vacation?
on vacation ------- on 强调“度假”。强调去某地度假就用“on vocation / holiday”.
1.你假期打算做什么？for也可以由during代替，为什么是for，就像二为什么读二一样，就是英语文法，犹如what're you going to do for the summer holiday?
2.你什么时候去度假？go on vacation去度假，固定短语。
希望帮到楼主
for ”为了”表目的 “你打算假期做什么呢？”
on “进行中，处于...状态” on vacation 度假期间 go “做，从事”
“你什么时候去度假呢？”
希望对你有帮助哦
表示在一段时间内。 写错了吧？应该是 Where are you going for vacation?和What are you doing on vacation? 这里for和on不可以互换。for表示目的
for是表目的。你去度假都玩些什么？
go on vacation 去度假 你什么时候去度假？
扩展阅读：what are they doing ... what are your names ... i do my homework ... what do you think ... sucker for you ... what are you talking ... what does the underlined ... where are you from ... we like to play ...
