| I | sniff |
|---|---|
| you | sniff |
| he/she/it | sniffs |
| we | sniff |
| you | sniff |
| they | sniff |
| I | sniffed |
|---|---|
| you | sniffed |
| he/she/it | sniffed |
| we | sniffed |
| you | sniffed |
| they | sniffed |
| I | have | sniffed |
|---|---|---|
| you | have | sniffed |
| he/she/it | has | sniffed |
| we | have | sniffed |
| you | have | sniffed |
| they | have | sniffed |
| I | had | sniffed |
|---|---|---|
| you | had | sniffed |
| he/she/it | had | sniffed |
| we | had | sniffed |
| you | had | sniffed |
| they | had | sniffed |
单语范例（未经PONS编辑处理）
While some of the youths had been found committing crimes such as smoking, glue-sniffing, fighting and shoplifting, most were there just to make friends.
en.wikipedia.org Typically, like many of my poorly-reasoned arguments, events have caused it to crash to the ground like a glue-sniffing pigeon.
www.thedrum.com Most of them, even children as young as four, have direct experience of drugs: glue-sniffing solvents, charas, powderi.
www.telegraph.co.uk The other was about glue-sniffing children he encountered, while painting the first mural.
en.wikipedia.org I learned my lesson early -- no more glue-sniffing for me.
www.standard.co.uk