Respuestas
he tells the truth, they will forgive him. / Si dice la verdad, lo perdonarán.
If we leave now we may get there by two. / Si salimos ahora puede ser que lleguemos a las dos.
If we are not there when they arrive, they can wait at the pub. / Si no estamos allí cuando lleguen, pueden esperarnos en el pub.
If you start doing exercise you may lose some weight. / Si comienzas a hacer ejercicio puede ser que pierdas peso.
If you find a mistake, I will correct it. / Si encuentras un error yo lo arreglaré.
If it gets cold you can use my coat. / Si hace frío puedes usar mi abrigo.
If you need money I will lend it to you. / Si necesitas dinero yo te lo prestaré.
If everyone agrees we can go on a trip. / Si todos están de acuerdo podemos irnos de viaje.
If you train you will have a better performance. / Si entrenas tendrás un mejor desempeño.
If you go to the doctor he will give you some medicine. / Si vas a ver al médico te Dara medicina .
Negativas
She won't be angry if you tell her the truth.
If I don't see you later, I will see you on Friday.
You won't have time if you don't start now.
If you tell me your secret, I won't tell anybody.
If I don't write it down, I won't remember it.
You won't pass if you don't study.
If you find something in a shop that you really like, they won't have it in your size.
If you take Vitamin C, you won't get a cold.
Jack will be sad if he don't see you tomorrow.
If you don't remember to take an umbrella, it will rain.
Interrogativo :
If you don't eat, will you be healthy?
If he marries her, will he be happy?
If I call you will you come?
If we are late, will we miss the plane?
If you exercise , will you loose weight.
If they have a baby, will they be happt?