In the following sentence:
We see pulses of light each time the beam sweeps past the Earth.
What is the grammatical role of "past" and what does it mean?
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It only takes a minute to sign up.
Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top
