... building.) 5 When talking about addresses, you use `at' when you give the house number, and `in' when you just give the name of the street. They used to live at 5, Weston Road. ... preposition. Youths clashed with police in Belfast. She was always quarrelling with him. Unit 55 Ergative verbs Main points * Ergative verbs are both transitive and intransitive. The object ... 20 degrees. a speed of 25 kilometres an hour. You can use `of' after a noun to give someone's age. Jonathan was a child of seven when it happened. 5 You use `with' after...