The pen is blue.成分分析

The pen is blue.成分分析 why the sky is blue 的成分分析 the blue pen is( ),( )is black. The blue pen is the longest 对划线部分提问 the pen is blue怎样变成一般疑问句? 如何提问The blue pen is my favourite one The pen is blue对划线部分提问（划线部分为is blue） 修改病句 This is a pen.The pen is a blue. the red pen is more---than the blue pen.该填什么 _____ pen is blue.It's _________ blue pen. 英语问答!A:What colour is the pen?B:lt's blue.lt's a blue pen.A: My jacket is white.Her is blue.The pen is in the pencil box,