改为否定句（英语的）This is a computer game .(改为否定句） He is 13 years old .(对13years old提问） Is this your pencil (做出肯定回答)

this is a map.(改为否定句) This is a watch.改为否定句. this is letter A.改为否定句 This is a clock改为否定句 This is a lion.改为否定句 This is a book.(改为否定句） this is a bus.(改为否定句） 改为否定句（英语的）This is a computer game .(改为否定句） He is 13 years old .(对13years old提问） Is this your pencil (做出肯定回答) This is a UFO改为否定句还有This is a letter A 改为否定句 Is this ruler?(改为否定句） this is a map of china改为否定句 tHIS IS A MAP OF cHINA.改为否定句 [紧急求助]This is a ruler.改为否定句 this is a bag 改为否定句是什么 This is a fat boy. 怎么改为否定句 1. This is the art room.(怎么改为否定句?) 2.This is a TV.(怎么改为一般疑问句?） 英语复数句1.Is that a nose?（改为复数句）2.Is this an English computer?（改为肯定句）_____ _____ anEnglish computer3.These are my maps （改为否定句） This is a computer.(改为否定句） —— —— —— a computer.