Preposition: of

• size: In Africa, Lake Chad is now a twentieth of the size it was in the 1950s, leaving millions potentially without water.

Adjective modifier

• early: Possibly it was late nineteenth century or early twentieth.

Modifies a noun

• century: To bring the class in to the twentieth century we were then given writing books.

• anniversary: We are also delighted to welcome Alasdair Fraser for the twentieth anniversary of Fiddle Week which will take place in August.

• centurythe: Late twentieth centurythe its roots in a great excuse will love these.

• text: Classic twentieth century texts can be reread as environmental texts.

• birthday: Bertie Harvey NEWS FROM ORKNEY VINTAGE CLUB The 23rd of November, 2002, was the twentieth birthday of Orkney Vintage Club.

• dynasty: Third Intermediate Period After the twentieth dynasty, Egypt must have had problems.