This is a sheep怎么改成复数句?急

This is a sheep怎么改成复数句?急 把this is a sheep改为复数句 This is a sheep.（改写为复数句) Is this a ruler?怎么改成否定句 this is a tall man 改成感叹句怎么改 This is a yellow drees怎么改成特殊问句 This is a big house?改成疑问句 怎么改This is a big house?改成疑问句怎么改 把下列句子改成复数形式1、There is a child over there.2、What`s this in English?3、The sheep is drinking water.4、Is it yellow?5、This is my book. This is my history book.怎么改成This is a history book_ _. 把下列句子改成一般疑问句,并作出否定回答.They are ducks.Those are tomatoesThese are carrots.They are cucumbers.This is a potato.This is a sheep. 把下列句子改成单数句或复数句1.This is a tiger.2.Those are eggs.3.Is it a bottle?4.Are these mice?5.There is a sheep on the hill. there is a sheep near the mountain .She has a good teacher .改成复数形式 We call it a calf A baby sheep is alamb There is a kid nearby 这三个句子怎么分别改成否定句和一般疑这三个句子怎么分别改成否定句和一般疑句？ There is a sheep in the farm.如何改成复数句 There is a sheep in the farm.如何改成复数句 that is a sheep的复数句怎么写 把it is a sheep变成一般疑问句,怎么变? this is pen?怎么改成一般疑问句