Pre-intermediate — Grammar In Use -

The core of pre-intermediate grammar is learning to combine different time frames.

For likely future events (e.g., "If it rains, I will stay home"). Grammar in Use - Pre-intermediate

comparing two things (better than) or many things (the best). The core of pre-intermediate grammar is learning to

For general truths (e.g., "If you heat ice, it melts "). "If it rains

Using "for" for a period of time (for 2 years) and "since" for a starting point (since 2021). Articles: Overusing or omitting "a," "an," and "the".

Describing a background action interrupted by a shorter one (e.g., "I was walking home when it started to rain").