19. Future Time Clauses

NEVER use "Will" immediately after time conjunctions (When, If, Before, After, As soon as, Until) when talking about the future.

[Main Clause (Will)] + [Time Clause (Present Simple)]

- Correct: "I will call you

." - Wrong: "I will call you when I will arrive." - Correct: "We will go

." - Wrong: "We will go if it will rain." - Correct: "

, we will start."