5 What is the plural form of these nouns? Use a dictionary to help you. 1 uncle 6 life 2 address 7 lady 3 day 8 tooth 4 video 9 mother 5 match 10 knife LOOK OUT! a Some nouns are always plural (e.g. scissors, trousers). b Some nouns have no plural form. We call these uncountable nouns (e.g. homework, information, luggage, help, advice).​