英语里改复数句时人称要改吗?(I have an apple?)

英语里改复数句时人称要改吗?(I have an apple?) 在英语问句里改复数句怎么改第三人称 英语的复数句改单数句 英语的复数句改单数句 怎样改复数句?（英语）I am anactress.和There is a bike under the tree. 怎样改复数句？ 改复数句 改复数句. 改复数句I see a monkey in the zoo 把“I am a boy”改成复数句怎么改 I can't find my book 改复数句 I am playing footbool in the piayground[改复数句 I'm a pupil.（改为复数句） 怎么改?I'm a pupil.（改为复数句）怎么改? 改为复数句,怎么改啊I'm free tomorrow 改为复数句 英语里改复数要把a改成some吗 改复数句：The red skateboard is super.改一般疑问句：I like toys very much. I can see some birds in the tree (改否定句）1.can see some birds in the tree (改否定句）2.The eggs are( three yuan) 括号里提问3.I’d like (some apples) 括号里提问4.I am a waitress (改为复数）5.That is an apple(改为复数 I want to buy some apples.some 提问、同义句、单复数互改 I come from ChinaChina　提问、同义句、单复数互改麻烦各位童鞋了