it is that复数

it is that复数 this,is,it,that,my,的复数. it、this、that、is、you这些单词的复数形式. It is... that... 如果强调的是复数名词怎么办? that is的复数 it is a libriary 改复数句,that kite is yellow对yellow 提问,that mou it is的复数 that的复数 it的复数 英语改复数形式That is a dictionary This is an exercisebook It is a 改为复数形式 Is that an English book?What"s this in English?It is （单数句子变复数） 1.—Is that your family? —Yes,it is. 变复数句It's an appleThat's a red knife Is that your bagThis is