This is a conditional 1st if + verb in present .... will + verb in present. If I eat ice cream I will be fat. so If i SEE one of you disappearing I will contact italki community.

If the situation is considered a realistic future possibility, use a type 1 conditional. "If I SEE one of you disappearing, I WILL contact ...." If the situation is considered an unrealistic future possibility, use a type 2 conditional. "If I SAW one of you disappearing, I WOULD contact ...." If the situation was a contrary-to-fact past possibility, use a type 3 conditional. "If I HAD SEEN one of you disappearing, I WOULD HAVE contactED ...." More information here: https://www.ef.com/ca/english-resources/english-grammar/conditional/ Also, English Grammar in Use by Murphy covers these topics. Unit 38 - type 1 and 2 - If I do and If I did Unit 39 - type 2 (hypothetical present/future) - If I knew Unit 40 - type 3 (hypothetical past) - If I had known

Hi, If it's very likely and if It's a threat: If I see you playing computer games you will be grounded. If it's about something which is less likely to happen: If I saw her playing computer games, I would ground her. You should have a look at the Cambridge Advanced Grammar in Use book for the tiny differences in grammatical structures. You are welcome to contact me for assistance. Kind regards, Anni

First Conditional: If I see one of you disappearing, I'll contact the italki community. Check out my teacher profile: www.italki.com/teacherhelpme

First Conditional: If I see one of you disappearing, I'll contact the italki community. Check out my teacher profile: www.italki.com/teacherhelpme