the days 为什么要加s

the days 为什么要加s the days are shout?中的day为什么要加S,以及day前为什么加The The days are long and the nights are short请问在这days和nights为什么要加S 这几个词为什么要加sWhich seasons do you like best?The days are long and th nights are early.seasons,days,nights,为什么要加s the days 前为什么加the?day为什么加s?如题. in those days（当时）为什么day要加s the days are long and nights are short. the sun rises early and sets late .两句话里面的s为什么要加s The will be back in(a few days')time.为什么加s’ The trendiest kind of pet these days is the pot-bellied pig.为什么PET不用加S呢? 请问这些单词后面为什么要加s?Which seasons do you like best?seasons后面加s是因为季节的复数.The days are long and the nights are short.days和nights后面加s是因为日子和夜晚的复数.The sun rises early and sets late.ri I like rainy days 为什么day加s clean the windows为什么要加s this is because in the early days of radio,those who .中间为什么要加逗号 in the last days用不用加few为什么 10.Mary’s birthday is ____time .A.on four days‘ B.in five days’ C.six days‘ away D.seven days away什么时候要加” ’ ”这个符号,这一题要不要,为什么D为什么是错的 the days are long为什么要加Sthe days are long and the nights are short.还有the sun rises early and sets late 动词变化the weather gets warmer,and the days get longer.两个get的变化怎么理解?the weather 是单三的话，为什么the days后的get不加s 为什么in the 1860s后面要加s?