how引导的宾语从句I can't image ___________________填how excited they were.问,为什么不能理解成that 引导的宾语从句,即i can't image (that)they were how excited.how excited 作甚么语?表语么?正常语序中应该放哪里,为什么1楼，我知道没有，但语法上怎么错了？
问题描述：
how引导的宾语从句
I can't image ___________________
填how excited they were.
问,为什么不能理解成that 引导的宾语从句,即i can't image (that)they were how excited.
how excited 作甚么语?表语么?正常语序中应该放哪里,为什么
1楼，我知道没有，但语法上怎么错了？
答
就没有 I can't image (that)they were how excited 这种说法的吧
答
how是关系词，引导宾语从句。how excited不是表语，excited是形容词，how引导用来表程度。而that在此无意义，不能表达这层意思。
答
宾语从句分为3种
1,用于that做连接词的即主句+that+从句
2,用特殊疑问词作为连接词的,就是本句中的how excited.
3,不加连接词,即对主语进行提问
如果用that连接的话,就变成I can't image that they were.句子则不成立了!
答
they were how excited. 这样的表达是错误的how excited作为表语从句的话就要是个完整的句子，你这样的表达是中国式英语。
只能是I can't image how excited they were中间省略了that