What tense can we use after “If you have time, …”?
For example, is it right to say: “If you have time, we could go for a walk by the sea.”
Thank you very much!

Question

Answer

You can use a conditional (could/would/may) or also you can use the future... If we have time, we will.  English is a little loose that way.  Never use the future with "If you had time..." though.  In that case "If you had time, you could have..." implies that you did not, in fact, have time.

Evden çıkmadan dil öğrenme fırsatını kaçırmayın. Deneyimli dil eğitmenlerimizden oluşan seçkimize göz atın ve ilk dersinize şimdi kaydolun!