英语句子单数改复数!1、it's a knife.2、this is my book.3、what's this?4、what colour is the leaf?5、is the boos new

英语句子单数改复数!1、it's a knife.2、this is my book.3、what's this?4、what colour is the leaf?5、is the boos new 英语!单数句改复数!1.He is a boy2.This is his pen3.It's an English book4.He has an eraser It's a pencil box 复数改 it's a ruler?改复数句 这些英语句子怎么改形式?this is a piano（改复数）that knife is short（改复数）is it a spoon?（改复数）are they old cooks?（改单数）are those girls new?（肯定句）are these pencil-boxes old?（肯定句） 英语句子单数改复数如何改是句子,不是单词 按要求完成句子 英语 It's a small dress.改为复数句 Is it new?改为复按要求完成句子 英语It's a small dress.改为复数句Is it new?改为复数句whose sweater are they?改为单数句This is my hat.对划线部分提问,my划 把英文句子改成复数what is it?it's a mirror?it's a bus?请该为复数,怎么改 It's a notebook改为复数句子 英语的复数句改单数句 英语的复数句改单数句 英语改复数形式改这几个哈……1、It's a knife.2、He is an English teacher.3、I'm a studen. （单数句子变成复数） 1.This is a map.2.That's an orange orange.3.—What's this?—It's a watch. It's a table .(改复数句） 把下列单数句子变为复数句子/复数句子变为单数句子.1 is it an English book?2 He is a good boy 3 Thoes are eggs?4 Are they Chinese cars? 英语句子单数变复数He has a round face.(变为复数形式） 英语复数It's a potato改为复数形式 英语句子单数变复数1、Is that her English book?(改成复数)2、Those aren't Chinese buses.(改成单数)3、It isn't his pencil-box?(改成复数)