This’s an eraser and that's a card.改错误 哪里错了?并改正.

This’s an eraser and that's a card.改错误 哪里错了?并改正. This is a pen and that’s an eraser.可不可以写成This is a pen and that is an eraser.呢? It‘s an eraser. Look!（ ）an eraser 1 That’s 2 This’s 3 What’s 4 Where’s This is an eraser 对an eraser 提问 There____a pen and an eraser that's an eraser ______ _____an eraser?(一般疑问句) this is a cup (攺为复数形式)those are (red books)提问_______ ________ thosethey are (my sisters and brothers)提问______ ______ ______? Thay's an eraser in English.(对 an eraser 提问) 英语翻译There are some things on the table.We can see an sraser,a ruler and a dictionary.Whose eraser is this?Whose ruler and whose dictionary?Is this Tom’s eraser?No,it isn’t..It’s not Tom’.It’s Lily is Tom’s sister.The ruler is very this is an eraser 改复数 this is an eraser 变复数.快 This is an eraser.(改为否定句) This is an eraser.(改为否定句) This is her an eraser.与This is her eraser.This is her an eraser.与This is her eraser.为什么不用“an”? She n_ a pencil and an eraser. 英语 在什么情况下用an和a我是英语菜鸟,请问在什么情况下a,在什么情况下用an填空 This is .eraser and that's.gold. 英语翻译 It's an eraser in English. that's an eraser改为复数句