Sam asked David if/whether he wanted to try anything new.anything要改为something吗不要为什么因为宾语从句的原句是个问句。间接引语中的宾语从句是肯定句呀，anything不就要改成something这里的宾语从句原句是个疑问句，跟宾语从句为陈述语序无关。