| I | intervene |
|---|---|
| you | intervene |
| he/she/it | intervenes |
| we | intervene |
| you | intervene |
| they | intervene |
| I | intervened |
|---|---|
| you | intervened |
| he/she/it | intervened |
| we | intervened |
| you | intervened |
| they | intervened |
| I | have | intervened |
|---|---|---|
| you | have | intervened |
| he/she/it | has | intervened |
| we | have | intervened |
| you | have | intervened |
| they | have | intervened |
| I | had | intervened |
|---|---|---|
| you | had | intervened |
| he/she/it | had | intervened |
| we | had | intervened |
| you | had | intervened |
| they | had | intervened |
单语范例（未经PONS编辑处理）
The area was under surveillance by numerous plain clothes police who were ready to intervene if necessary.
en.wikipedia.org For example, removing food from a dog, or appearing to intervene between a dog and its food.
en.wikipedia.org The revised 2002 edition contains revisions to the original 1990 edition in light of intervening archaeological finds and studies.
en.wikipedia.org This contrasted markedly with the princely states, where the authorities often did intervene.
en.wikipedia.org If an opponent's piece intervenes, it may be captured by moving to that square, and removing it from the board.
en.wikipedia.org