A毫无疑问是正确的.
four-metre-deep的表示方法本是可以的,但用在这个句型中就不行,可以说,It's a four-metre-deep well.也就是说后面应该加名词.
你说的12-year-old,也是这样,不能说the/a boy is 12-year-old.应该说the/a boy is 12 year old 或a 12-year-old boy.
A毫无疑问是正确的.
four-metre-deep的表示方法本是可以的,但用在这个句型中就不行,可以说,It's a four-metre-deep well.也就是说后面应该加名词.
你说的12-year-old,也是这样,不能说the/a boy is 12-year-old.应该说the/a boy is 12 year old 或a 12-year-old boy.