Mr Green is an Englishman. He teaches English well His English classes are very interesting. He likes us and we like him, too.
    Mr Green has two children----Mike and Nancy. Mike is eight and his sister Nancy is five. Mike goes to school but Nancy doesn’t. Mr Green likes to wear a T-shirt and a pair of jeans. Football is his favorite sport. After school we often have a basketball match. Sometimes Mr Green watches and joins us. He plays basketball just for us.

已知f（x）=Asin（ωx+φ），（A＞0，ω＞0，0＜φ＜π）的图象的一部分如图所示，则f（x）解析式是（　　）

 ____ ____ will he stay in America?