Unit 4 Astronomythe science of the stars Period 3 Grammar-人教版ppt课件 必修3
Unit 4 Astronomythe science of the stars Period 3 Grammar-人教版ppt课件 必修3第4页

preparation

What part does the underlined part serve as in each sentence? A tree has fallen across the road. You are a student. To find your way can be a problem. Smoking is bad for you. What she said is not yet known. That we shall be late is certain. It is certain that we shall be late.

主语