1.If I were you ,I would learn English well .
2.If you were here yesterday ,you whould meet him .
3.The meeting will be put off if it rains tomorrow .
4.If you followed the doctor's advice, you would be better now
is it right? thank for your response
2- If you'd been here yesterday, youwould have met him.
4- If you had followed the doctor's advice, you would be better now.