| I | cooperate |
|---|---|
| you | cooperate |
| he/she/it | cooperates |
| we | cooperate |
| you | cooperate |
| they | cooperate |
| I | cooperated |
|---|---|
| you | cooperated |
| he/she/it | cooperated |
| we | cooperated |
| you | cooperated |
| they | cooperated |
| I | have | cooperated |
|---|---|---|
| you | have | cooperated |
| he/she/it | has | cooperated |
| we | have | cooperated |
| you | have | cooperated |
| they | have | cooperated |
| I | had | cooperated |
|---|---|---|
| you | had | cooperated |
| he/she/it | had | cooperated |
| we | had | cooperated |
| you | had | cooperated |
| they | had | cooperated |
单语范例（未经PONS编辑处理）
There is an assumption, in both campaigns, that we are self-seeking creatures, rather than also loving, serving, hoping, dreaming, cooperating creatures.
www.seattletimes.com As of 2006, ACORN was improving its fraud detection and reporting procedures, and cooperating with authorities in efforts to prosecute violators.
en.wikipedia.org Students receive a monthly salary, and most of the cooperating companies take over (part of) the tuition fees.
en.wikipedia.org This proved to be an exceptionally effective sanction, quickly showing the other side the advantages of cooperating.
en.wikipedia.org Though players will retaliate, they will once again fall back to cooperating if the opponent does not continue to defect.
en.wikipedia.org