outdoor和outdoors有什么区别还有indoor和indoors的区别,用法最好有示例（句子）

outdoor和outdoors有什么区别还有indoor和indoors的区别,用法最好有示例（句子） 户外运动用英语怎么说?应该是outdoors activities还是outdoor activities? Sometimes they play___(户外)除了outdoor可以填outside吗请说明原因,不好意思，我打错了，应该是outdoors和outside Summer in America is a time enjoying the outdoors.中enjoying当句子的什么成分?为什么不用to enjoy（或者此句用to do也可以吗?为什么?）还有将上句的后半句改成to enjoy the outdoor life和原来一样吧？也可以换 outdoor activities和outdoor sports的区别. indoor indoors outdoor outdoors inside insides outside outsides的区别?请说明它们的词性.Thanks! be动词后面可以接副词做表语吗新课标高中英语必修一Page2上面有一句话是：I wonder if it's because I haven't been able to be outdoors for so long that.为什么这里be后面用outdoors,outdoor不是副词吗?难道be动词 outdoor you should play football outdoor(s)后面那个是应该用outdoor还是outdoors,一个是形容词一个副词,那个词在句子里应该是状语吗? The students who like games don't like to playThe students who like games don't like to play footballA indoors,outdoor B indoors,outdoors C indoor,outdoors D indoor,outdoor outdoors与outdoor作定语的区别 名词作定语什么时候用单数,什么时候用复数；区别 play outdoors with classmates or friends．对吗play outdoor sports with classmates or friends．对不对？ She works ( ) outdoors括号里填什么 keep sb outdoors有这种用法吗? 几道英语 高手来! 全答追加20分 绝对守信!为了不白白损失分数只好先带少分发题 之后再给分了 对不起拉!in order to和 so as to的区别? face to face和face-to-face的区别? 怎样区分outdoor outdoors indoor in There is no ___swimming-pool in this school and the students often go to swim ___.A.indoors;outdoors B..indoor;outdoor C.indoor;outdoors D.indoor;indoors 为什么选C正确答案是B Great Outdoors是什么意思?是一个喜欢旅游的人写的来信,outdoor是户外,但是为什么这里大写呢?是否是一个专有名词? 手机里面有个outdoor是什么,