Unit 4 Astronomy-Grammar[主语从句教学课件] 人教版必修三
Unit 4 Astronomy-Grammar[主语从句教学课件] 人教版必修三第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.