【単数、複数】some,others,one,the othetr,every,each,either,that節

ない

正誤問題に注意

☆単数
another+単数名詞
the other
every+単数名詞
each+単数名詞
either+単数名詞
that節
the number of ~

☆複数
others
the others

a number of ~

one of 複数名詞

☆分数
one-third
two-thirds→分母複数

seven years old
seven-year-old boy

seven-year-old→形容詞で単数、複数の概念ない

some/others

https://study-z.net/100051912

some,others,one,the othetr

https://www.enavi.info/gra/daimeishi-8.html