适用于：人教课标高二英语下学期选修8 Unit1 Grammar 新授课课件 

Unit 1  Grammar
Revise Noun Clauses
复习名词性从句
Exactly when the first people arrived  in what we now know as California, no one really knows.
However, it is likely that Native Americans were living in California at least fifteen thousand years ago.
Scientists believe that these settlers crossed the Bering Strait … times.
It is believed that before long the mix of nationalities will be so great … many races and cultures.
This is why each year a great number of people from all over the world try to immigrate to California.
The fact that they arrived a long time before Europeans is what matters.
What the driver of the yellow car did made me extremely angry.
Why she did this is still unknown.