nobody has seen mary for twenty minutes , have they?
=>the last time mary
someone forrgot to turn off the light last night , didn’t they ?
=> no one
her father hasn’t drun wine for two years , has he
=>her father stopped
nobody has seen mary for twenty minutes , have they?
=>the last time mary
someone forrgot to turn off the light last night , didn’t they ?
=> no one
her father hasn’t drun wine for two years , has he
=>her father stopped
1. Nobody has seen Mary for twenty minutes, have they?
→ The last time Mary was seen was twenty minutes ago, wasn’t it?
2. Someone forgot to turn off the light last night, didn’t they?
→ No one remembered to turn off the light last night, did they?
3. Her father hasn’t drunk wine for two years, has he?
→ Her father stopped drinking wine for two years, didn’t he?