that a girl和that girl?那个是对的?可数名词是不是在任何情况下都得表现出来单复数?如果不是,在什么情况下不用呢?

请帮我看一下我这二句英文语法有问题吗?She seems to be a Barbie girl.It seems that she is a Barbie gir. she is a gir that /whom everyone likes为啥不用who呢? 按要求改写下列句子 It’s suitable that a slim girl wears clothes in warm colors（改为同义句按要求改写下列句子1.It’s suitable that a slim girl wears clothes in warm colors（改为同义句）It’s （ ）（ ） a slim gir That's a girl对a girl提问 Mr Smith,a young man,works for a computer c____.He is an e____.He has a beautiful gir friend.Oneday his girl friend tells him that the next day will be her 24th b____.Mr Smith wants to give a p____to her to show his l____.And then,the next m____Mr Sm That's a girl.改为复数形式 that a girl beautiful she is who is that girl in a red() that you are a uery stylish girl That girl is a lucky dog W( ) is that girl with a dog -What is that girl?-She is a movie ( ).-What is that girl?-She is a movie ( ). That girl is a singing star改成同义句如上,不过开头要是That girl, Who is that girl? The girl that I ‘who is that girl That Girl歌词? （ ）is that girl?