l am a boy,senior high student 这句话不对吗?

l am a boy,senior high student 这句话不对吗? l am a boy 变否定句l am a boy 怎样变成否定句? I am a new boy.(改为反义疑问句） l am a new boy,__________? l am a f____ of a boy aged 15 I am a senior high school students. 以my plan of english learning为题写作文开头how time flies now l am a senior 3 student 求英语转成中文Hi!l am Mary.l am three.Hi!l am Tom.l am four. I am a boy. Hi l am using WeCht,a simple and fun voice and text chat application.翻译 改错At presently I am a senior high school student l am a boy请问a boy是表语还是宾语啊表语和宾语不一样是吧 l.ll be a senior high school student翻译 l am a fat boy.改成一般疑问句,并作否定回答 我14岁,一米六,算矮么,如果矮,咋才能长大高 l am a boy people say Alex is a bad boy,_he really is,l am afraid,为什么用which lf l were a boy lf l were a boy if l were a boy. l am a boy ,age 17,study in a high middle scool ,l`m aways get bad grade ,what should l do?