Survival course to learn English from scratch
INSTRUCTIONS TO STUDY

1- watch the video. 2- watch it again repeating after the teacher. 3- read the transcript (optional), see if you understand. 4- watch the video again once or more times until you learn the lesson well. 5- now try to use some objects to reproduce the dialogue (more or less) so you can practise what you just learnt.

If you are twenty years old and I am twenty years old too, we are the same age. If I am forty and you are twenty, we are different ages. You say "I am twenty", "I am twenty years old", but you never say "I am twenty years of age". You might read in the paper, in a book, in a newspaper "twenty years of age", but you say "twenty years old".