在复杂句中作表语的从句, 就叫做表语从句。表语从句一般放在系动词之后,结构是“主语+系动词+表语从句”。
表语
1 This is what I want to do
2 This house is the very thing he wants
3 The problem is how people can find an effective way to store the heat of the sun
4 The problem is who can accomplish this difficult task
5 The topic we discussed today was what the school would be like in the future
6 The reason why he was late was that there was heavy traffic.
7 The fact is that he lied to me
8 This is how Henry solved the problem
同位语
1 The thought that they should have another try is worth considering
2 We all know the face that she works very hard
3 They expressed the hope that they visit China again