请给中国的小学四年级学生逐句讲解这些内容,解释重点的单词、词组短语、语法现象。---THREE ENGLISH TEENAGERS ELLIE I'm 12 years old and I live in London with my parents, my two sisters Mel and Sue, and my little brother, Mark - oh, and our dog, Rufus! I'm the youngest girl in my family. Mel and Sue are both 19. They are at university. My best friend is called Stef. She's really funny and very good at playing the guitar. She's in a band. They're playing at the school party tonight. LAURA I live with my mum and dad in a small town in the north. I'm nearly 13. I don't have any brothers or sisters. My mum is a musician, and my dad teaches at the university. I hope to study there when I'm older. It's my birthday next week and I'm having a party. I'm inviting all my friends. We're having lunch then going to a football match. My best friend Anya is from Poland. She hates sport, but she'll still have fun! CHLOE I'm 13 years old - two years older than my little sister, Monica. I don't have any brothers. We live in a big family house in a village. I don't have any pets, but I'd really like a cat! My dad is a mechanic. My mum isn't from England. She's Spanish and she teaches languages at my school. Everyone in my family plays some kind of sport, but I don't like sports very much. All I play is my piano!

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