I don not understand him 变复合句怎么变啊?(会的看见了说下,)

I don not understand him 变复合句怎么变啊?(会的看见了说下,) 改为复合句：I don't understand him I don't understand()()() 大气压变了,水的凝固点会变不?会变,怎么变? I don not understand是什么意思 含宾语从句的复合句怎么变反义疑问句 宾语从句复合句变简单句怎么变? but I （could） not understand him 变定语从句的复合句的窍门 英语复合句变简单句的方法~ I often hear him sing the song.的被动怎么变 从百度文库下的数学题符号怎么变了 where shall I have stop on the way? Do you know?怎么变复合句