depend on依赖,依靠;取决于,随…而定

例句：This will depend on the particular facts of each case.
      这就要看每个案例的具体情况了。

2.But he dropped out one year later after someone gave him a guitar.

drop out不参与,离去,放弃

例句：He had sunstroke and dropped out.
      他因中暑而掉队。