Appositive ClauseWhat kind of noun clauses are they? What it was to become was a mystery.2. I dont know who will help Henry to win the bet.3. His trouble is that he doesnt know anybody in London.4. The fact that ships can go there surprises many people.名词性从句Mr. Liu, our Chinese teacher, is a charming gentleman.The thought that they could cross the whole continent was exciting. 同位语（appositive ）同位语从句（appositive clause）Lead-in 名词性从句 主语从句 宾语从句 表语从句 同位语从句主语从句在句中做- 宾语从句在句中做-表语从句在句中做- 同位语从句在句中- 主语宾语表语
