What are you doing Tuesday afternoon?为什么时间状语前没有介词?
问题描述：
What are you doing Tuesday afternoon?为什么时间状语前没有介词?
但是为什么在What are you doing on Monday?中,时间状语Monday前又有介词?一直很困惑,
答
“What are you doing on Monday?” 是一定要介词的.
“What are you doing Tuesday afternoon?” 这里介词on可有可无,是有afternoon的缘故.
这是习惯问题,约定俗成了的.记住就好.
“what are you doing this afternoon?”类似的一句.或许你对这样的表述比较熟悉.