1 I want to know what your first impression（印象） of me is.宾语从句
2 .What you said makes me more confident about this.主语从句
3 I have no idea how I can make a grammar lesson interesting.同位语从句
4 4.My question is why you don’t like the programme.表语人句
5 Southerners find it difficult to understand what northerners are saying.宾语从句