用英语从体貌到性格介绍你与你朋友的相同和不同

i have a good friend who named Tom ,we all have big eyes and small ears but he is much taller than me ,also he is stronger than me! generally we are all very thoughut for the others! that mens we are very selfless but i am not so sonsy as Tom ,he can talk with a stranger for an hour at the first they meet! i can not do that,he is also more ploite than me! every time we meet some of our teachers he will say hi to the teacher as soon as we see they!