I'd do this to avoid confusion with the term 'an only child': 1- I'm the only child at home after my brother and sister left us. 2- I'm the only child at home after my brother and sister left. 3- I'm the only child at home after my brother and sister left the house.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Mister MicawberCan't we use present perfect? "I'm the only child at home after my brother and sister have left us."- Yes. I am just trying to provide students with the most reasonable language. How about this? " I will be the only child at home when my brother and sister have left us."-- OK as amended.Thanks MM