To go in for tennis(Она увлекается теннисом) В Отрицательной,Вопросительной и Утердительной тоже самое с Вчера она играла на гитаре (Yesterday she played the guitar)
She didn't go in for tennis. Does she go in for tennis? She goes in for tennis. Yesterday she didn't play the guitar. Did she play the guitar yesterday? Yesterday she played the guitar.