1. Explain it simply
还 + adjective means 'passably / so-so' - not great, not bad.
Common answers are 还好, 还行, and 还可以.
Here 还 is not 'still' or 'also'; it softens the adjective to 'fairly'.
2. Show examples
你身体怎么样?还好。
Nǐ shēntǐ zěnmeyàng? Hái hǎo.
How's your health? It's OK.
还好 = so-so
这件衣服大吗?还行。
Zhè jiàn yīfu dà ma? Hái xíng.
Is this garment big? It's alright.
还行 = alright
昨天的考试怎么样?还可以。
Zuótiān de kǎoshì zěnmeyàng? Hái kěyǐ.
How was yesterday's exam? Not bad.
还可以 = OK
3. Share a tip
还 + adjective means 'passably / OK' - not great, not bad. Here 还 is not 'still' or 'also'.

