Кто сможет объяснить написание предлогов ''is, am, are''. В данных предложениях.
My name is Brenda Foster. I am on the left in the picture. I am ten years old and I am in the fifth form. My birthday is on the first of January. I am from Santa Monica, California, USA. I am American. My phone number is 235-456-789. I live at 16 Park Street. My post code is LA 30 SM. I’ve got a sister and a brother. Their names are Gina and Paul. Gina is 16 years old and Paul is only three. I’ve also got a dog. His name is Spot. He is on the right in the picture. My Mum is a doctor. She works at a hospital. My Dad is a driver. He works in Los Angeles. We are all friendly in our family.

Is , am, are это формы ГЛАГОЛА to be в настоящем времени. Глагол is употребляется с местоимениями SHE, HE, IT. Глагол are с местоимениями we, you, they. Глагол am с местоимениям I.