It appeared as if it had gotten as far as it could and it could go no farther
翻译：
仿佛它已经到达了极限再也走不远了.
分析：
It 形式主语
appeared 谓语动词
as if it had gotten as far as it could and it could go no farther :
as if引导由and连接的两个并列句作为宾语从句.