2016-2017学年 人教版 必修三 Unit 4 Astronomy :the science of the stars grammar课件 (28张)
2016-2017学年 人教版 必修三  Unit 4 Astronomy :the science of the stars grammar课件 (28张)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