Lowercase letters can be written in many contexts, but there are specific situations in which we should not write in uppercase.
See Lowercase letters in A1
- Family members:
- Physical descriptions:
We must use lowercase letters when we are talking about:
- Family members (as common nouns);
- Common places (which are not specific countries or cities);
- Physical descriptions carried out by adjectives.
External link to Lowercase letters exercises (1195).