2016-2017学年 人教版 必修三 Unit 4 Astronomy :the science of the stars grammar课件 (15张)
2016-2017学年 人教版 必修三  Unit 4 Astronomy :the science of the stars grammar课件 (15张)第3页

Revision Find the subjects in the following sentences.

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 to you. 5. What she said is not yet known. 6. That we shall be late is certain. 7. It’s certain that we shall be late.