Sigo su rastro por el bosque tranquilo.

I follow his trail through the quiet forest.

Breakdown of Sigo su rastro por el bosque tranquilo.

• yo: I
• su: his
• tranquilo: quiet
• el bosque: the forest

Questions & Answers about Sigo su rastro por el bosque tranquilo.

Why is sigo the correct form of the verb here?

Sigo is the first-person singular present tense of seguir, meaning “I follow” or “I continue.” Since the speaker is talking about themselves (“I follow his trail…”), you need the yo form, which is sigo.

What does su rastro mean, and who or what does su refer to?

Su is a possessive adjective that can mean “his,” “her,” “its,” “your (formal),” or “their.” Rastro means “trail,” “track,” or “trace.” So su rastro means “his/her/its/your/their trail.” You pick the referent of su from context (for example, an animal, person, or group).

What’s the difference between rastro and huella?

• Rastro is a general “trail” or set of “traces” left behind (footprints, scent, broken branches).
• Huella usually means a “footprint” or “paw print,” a single mark.
  Here, rastro is more natural if you’re following a sequence of signs rather than one print.

Why is por used in por el bosque tranquilo? Could I use a través de instead?