two meters long中的meter为什么直接加s 而two days' holiday 中的day为什么变所有格?这其中的变化有什么规律呢?

two meters long中的meter为什么直接加s 而two days' holiday 中的day为什么变所有格?这其中的变化有什么规律呢? 这句对不对The rope is two-meters-long 请用It's two meters long 的句式造句 “两百米长”英语里说“two meters long 还是two- meter -long ”噢?为什么? about four meters long,the room served as a ...中的about four meters long是定语还是补语? 100 meters long中的longRT中的long是什么词性?名词还是形容词?理由 It is two meters (years) long (old)造句2个翻译 It is two meters 复合形容词能做表语吗RT23.The river near our school used to be_____________________ long.A.two-hundred-meters B.two hundred meters C.two-hundred-meter D.two hundred meter为什么选B？ 10 meters long可以说10-meter-long? 英语中的连字符应注意什么为什么1.704米长不能用1.704-metter-long 而用1.704meters long 50-year-old与50 years old在语法中的区别It is said that the brige is_____.A eighty meters long B eighty-meters-longC eighty-meter-long D an eighty-meter-long正确答案是C ( )The bookshelf is about____A.two-meters tallB.two meters tallC.two meters highD.two-meter high选B还是C? The road is over 空 meters long.A.six hundred and fifty-two B.six hundreds and fifty two C.six hundred,fifty-two D.six hundred,fifty and two it is 8346 meters long.同义句 ten meters ’ long river 如果不对怎么说? The problem of grade 6 (to me)Two pole,the second root root than the first quarter,the first root than the second piece of short 1/4 meters,the second a few meters long piece? 请问It's 2 meters long中的long作什么语法成分?long是形容词,在这里作什么成分?如果long是表语,那2 meters又作什么成分呢?比如He is a teacher中teacher就是表语在这里为什么2 meters是宾语呢？有表语补足