为什么on next day off可以加介词on,而next week却不能加呢(⊙o⊙)?

为什么on next day off可以加介词on,而next week却不能加呢(⊙o⊙)? 为什么on next day off可以加介词on,而next week却不能加呢(⊙o⊙)? on my next day off 是什么意思? last Saterday前面不加介词,但为什么一定是on the next day off,on my last day off on next day off的on能不能去掉 5.I went hiking on my last day off.(用my next day off改写句子)I am _________ ___________ on my next day off.帮帮手， What are you doing _____ your next day off?A,in B,on C,to D,at为什么 （Shipments dropped-off after the cut-off time will be uplifted on the next working day)里面的dropped-off Where are you going ____your next day off?-I am going the countryside.A on Bin C with D at选哪个?为什么? on my next day off,i don`t want ______(go)for adrive students in our school ------（have） fun hiking on their next day off I went camping on my next day off为什么是用went He will go skating on the next day off 划线提问 go skating画线 （ ）22.On my next day _____ ,I don’t want to go _____ a drive.为什么A.in ,on B.off,for C.of ,for D.off,of ___my next day ___,I want to go swimming.A On,of B On,off C In,off D At,off you have a day off next —It rained all day on my next day off.—That ____ boring.A.sounded B.looks like C.listen D.sounds可是为什么俺们老师说是A咧？郁闷~ On my next day _____ ,I don’t want to go _____ a drive.A.in ,on B.off,for C.of ,for D.off,of