I.
noun
ADJECTIVE
▪ first
▪ middle
▪ final , last
▪
the last ~ of the novel
▪ remaining
▪ bottom , lower
▪ top , upper
▪
Most of the students' scores were in the upper ~ of the range.
VERB + THIRD
▪ divide sth into
▪
He divided the money into ~s.
PREPOSITION
▪ ~ of
▪
Over a ~ of sales were made over the Internet.
PHRASES
▪ about a ~ , almost a ~ , at least a ~ , over a ~
▪
Over a ~ of people questioned said they would consider cosmetic surgery.
▪ between a ~ and a half , a ~ to (a) half
▪
The discount is a ~ to a half of the full price.
II.
adj.
Third is used with these nouns: ↑ world