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

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 英语的复数句改单数句 英语的复数句改单数句 英语：把单数句改为复数句,把复数句改为单数句1、It is a schoolbag.2、He is a teacher.3、They are apples.4、They are boys. 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） 英语题目(单数句改成复数句),(复数句改为单数句)this is a bus.that is a big peachthey are girlsthey are old monkeys. 单数句变复数句,复数句变单数句.It is a bus____________________ He has a hammer.改复数句 He has a knife.改复数句 谁能帮我把英语陈述句变一般疑问句1.This is my friend.单数2.Thie is a bike.复数3.That is her brother.单数4.This is a note book.复数5.That is an eraser.单数6.It's a red orange.复数7.He is a good teacher.单数8.What is this? He is a boy改复数 改复数形式He is a student. They are [my sisters].对括号部分提问Is this your brother?[改为复数]How is he [改为复数]That is a ruler[改为复数]These aren't oranges.[改为单数形式】What color are the keys?[改单数句Bruce is my father and Ann is my mother It is a calf(改复数句) is that a mouse?改复数句 what is this?改复数句 This is a book.改一般疑问句 These are feet 对feet提问 These are eyes.单数句 This is a toy bus.改复数 These are some watches on the desk.这个该单数句 Is he making a wind-bell now?改复数句a wind-bell要变复数吗?