ANSWER: A semi-colon (;) is usually used for three main reasons:
- separating lists within sentences;
- completing items in a bullet list (like this);
- joining (usually) short, complete sentences into one sentences.
1. “There are many ways to keep fit and healthy: running around the block once a day; eating a balance diet; going to the gym; and visiting the doctor regularly.
(Also notice the use of the colon (:) above which is like a little arrow pointing to the right!)
2. (see above)
3. “IELTS writing task answers require correct punctuation for high scores; it’s not hard to learn.”
Notice that there is a noticeable “meaning” connection between the two joined complete sentences. Of course, they could also be written as two separate sentences.