The Course Book is at the heart of C21 – with beautifully designed pages providing rich material and engaging activities. C21 skills (a combination of academic and 21st century skills) are integrated into every spread and are introduced in a way that makes them accessible from A1 level.

The Course Book is at the heart of C21 – with beautifully designed pages providing rich material and engaging activities. C21 skills (a combination of academic and 21st century skills) are integrated into every spread and are introduced in a way that makes them accessible from A1 level.

The Course Book is at the heart of C21 – with beautifully designed pages providing rich material and engaging activities. C21 skills (a combination of academic and 21st century skills) are integrated into every spread and are introduced in a way that makes them accessible from A1 level.

Some thousands of years ago, the world was home to an immense variety of large mammals. From wooly mammoths and saber-toothed tigers to giant ground sloths and armadillos the size of automobiles, these spectacular creatures roamed freely. Then human beings arrived. Devouring their way down the food chain as they spread across the planet, they began a process of voracious extinction that has continued to the present.

The author analyzes, from a historical sociolinguistic point of view, selected domains of morphosyntactic variation in a 250,000 word collection of the Middle English Paston Letters (1421-1503). In three case studies, two nominal and one verbal variable are described and discussed in detail: the replacement of Old English pronouns by borrowed pronouns, the introduction and spread of >wh-relativizers, and the spread and routinization of light verb constructions (take, make, give, have, do plus deverbal noun).