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- My classmate is eighteen. 我的同学十八岁。
- My classmate is a real bookworm. He reads all the time. 我的一个同学真是个书呆子。他老是在看书。
- One of my classmates is from an African country. 我的一位同学是来自非洲的一个国家。
- The girl with long hair is my classmate. 长头发的女孩是我同学。
- My daughter is eighteen years old and has grown into a beautiful lady. 我的女儿十八岁了，已经长成为美丽的淑女。
- The age of majority is eighteen. 成年的法定年龄是18岁。
- The man studying in the classroom is my classmate. 那个正在教室里学习的人是我的同学
- Another of my classmates is sick! Today we were only 7 in the classroom. 我又有一个同学病了！今天只有7个人来上课了。
- He is my classmate of junior middle school. 他是我初中时的同班同学。
- One of my classmates is really smart, she always gets the best grades. 我有个同学非常聪明，成绩一直名列前茅。
- My sister is eighteen and I am fifteen. 我姐姐十八岁,而我十五岁。
- He is my classmate, but I never talk to him. 他是我的同学，但我从没和他说过话。
- This is Rose. She's my classmate. 这是罗丝。我的同学。
- The handsome boy over there is my classmate. 那边那个英俊的男孩是我的同班同学。
- One of them is my classmate Ma Hua. 我的同班同学马华是其中之一。
- The girl (that) I like is my classmate. 那位我喜欢的女孩是我的同学。
- My classmate borrowed my rubber and forgot to return it. 我的同学借了我的橡皮忘了还。
- The girl sitting opposite me is my classmate. 坐我对面的女孩是我的同学。
- Three multiplied by six is eighteen. 三乘六等于十八。
- Joan is eighteen years old, Tom. 汤姆,琼已十八岁了。
