This is a flower .为什么要加a

is a yellow this flower this is a ( )热带的 flower This is a flower .为什么要加a This is ( ) orange flower A a B big C an This is a nice flower改为同义句 is a yellow this flower怎么连成句子 This is a yellow flower.改成一般疑问句. This man is a flower eat帮忙翻译这句话 This is a big There is red flower on it （合并成一句） this flower is very beautiful改为感叹句 What a beautiful flower this is!(用how开头变同义句） this is_ a _map__in english.(对划线部分提问） this is my flower.(改为复数形式） Look,this is( )flower A.such a beatiful B.quite a beatiful such和quite有什么区别Look,this is( )flower A.such a beatiful B.quite a beatiful such和quite有什么区别 This（ ）a flower.It's （ ）.Look!（ ）a yree.What （ ）is it?It's （ ） This is quite ( ) beautiful flower ,so I want to pick it .A.a B.the C.an D./ 英语达~~~~~~人来 急啊啊啊啊啊啊!This is a big beautiful school. This school has many flower.(合并为一句） This is a big and beautiful school______ _____.This is a big and beautiful school______ _____.of beautful flowers There is a flower(改为复数句) 翻译''这种花不好养'' This kind of flower is .