ABSTRACT
https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315650487/c849f805-d154-434a-8346-fe4768ab1f2c/content/ifig0001.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> If you know what a verb is, go on to 1.1.1. You use a verb to talk about what someone or something does, is doing, has done or intends to do. A verb is often called a doing word.
