in summer holiday与this summer holiday的区别或者用法,为什么有的时候不用加介词?
问题描述：
in summer holiday与this summer holiday的区别或者用法,为什么有的时候不用加介词?
答
记住：
1 要介词的
in / during the summer holiday
in / during a wet summer holiday
in / during a cold and rainy winter holiday
2 不要介词的
this
last
next + summer holiday
every
one