1. I dont know where the post office is. object clause 宾语从句2. Did she tell us how we should do the work?object clause 宾语从句3. My dream is that one day there is no generation gap between our mums and us.predicative clause 表语从句1. A tree has fallen across the road.2. You are a student.3. To find your way can be a problem.4. Smoking is harmful.5. What she said is known.6. That we shall be late is certain.7. It is certain that we shall be late.Revision Find the subjects in the following sentences.主语从句
