Find and correct the mistakes (Найти и исправить ошибки) If he don’t know the words he won’t be able to understand the text. If Mary doesn’t take a taxi, she misses the train. If she come tomorrow, we will go shopping together. If John will take the medicine, he will recover quickly. He will cough a lot if he will smoke again.

If he don’t know the words he won’t be able to understand the text.
✅ Correct: If he doesn’t know the words, he won’t be able to understand the text.
Mistake: в главной части всё нормально (won’t be able), а в придаточном после if нужен Present Simple с правильной формой doesn’t (а не don’t для he).

If Mary doesn’t take a taxi, she misses the train.
✅ Correct: If Mary doesn’t take a taxi, she will miss the train.
Mistake: это условие про будущее последствие, значит нужен 1st Conditional: If + Present Simple, will + V. Здесь во второй части должно быть will miss, а не misses.

If she come tomorrow, we will go shopping together.
✅ Correct: If she comes tomorrow, we will go shopping together.
Mistake: после if в Present Simple с she нужен -s: comes.

If John will take the medicine, he will recover quickly.
✅ Correct: If John takes the medicine, he will recover quickly.
Mistake: в 1st Conditional после if обычно не ставят will: нужно takes (Present Simple), а will остаётся в главной части.

He will cough a lot if he will smoke again.
✅ Correct: He will cough a lot if he smokes again.
Mistake: та же ошибка: после if — Present Simple (smokes), а не will smoke.