为什么颜色前加in?

为什么颜色前加in? this evening前为什么不加In in 加颜色是什么意思? 为什么tomorrow前不能加in?比如They are going to see a movie in tomorrow.为什么不能在tomorrow 前加in? 为什么能用in there或in here 不是说副词前不能加介词吗 sunday前加in还是加on? 为什么形容词前加be He does his homework most carefully in his class这里最高级前为什么不加the? It is fun to have ice cream in summerice cream前为什么不加an there are some boys swimming in the poolswimming 前为什么不加 are? 关于lose feelingHe lose feeling in his leg.中为什么不在feeling前加the? Diara,together with her firends studieschinese in China?为什么在studies前加have? mary was the first in the exam为什么这里要在first前加the呢 They are in first place.这句话序数词前要不要加the?说说为什么 the boy in sportswear is handsome.sportswear前为什么不加冠词 I take an interest in music music前为什么不加the 表示颜色的词前要不要加不定冠词 为什么Christmas 前加at,Christmas day前加on