is that a car?怎么回答?

is that a car?怎么回答?

Is that a car?
Yes,it is.
No,it isn't.回答时,主语用相应代词,所以 that不能用,而用 it .

no,it isn't

this和that的代词都是it，故肯定回答是：Yes, it is. 否定回答为：No, it isn't.