Mac + Safari
iPhone + iPad
Google Chrome
Mozilla Firefox
Opera
Microsoft Edgehappen upon | 词形变化
英语 动词 happen upon 在所有时态和语法形式的词形变化。
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在学习英语吗？
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免费获得Indicative
Future perfect Continuous
Future Continuous
Pluperfect Continuous
Past Continuous
Perfect Continuous
Present Continuous
Future perfect Simple
Future Simple
Pluperfect Simple
Past Simple
Perfect Simple
Present Simple
| they | will have been happening upon |
| we | will have been happening upon |
| he/she/it | will have been happening upon |
| you | will have been happening upon |
| I | will have been happening upon |
| they | will be happening upon |
| we | will be happening upon |
| he/she/it | will be happening upon |
| you | will be happening upon |
| I | will be happening upon |
| they | had been happening upon |
| we | had been happening upon |
| he/she/it | had been happening upon |
| you | had been happening upon |
| I | had been happening upon |
| they | were happening upon |
| we | were happening upon |
| he/she/it | was happening upon |
| you | were happening upon |
| I | was happening upon |
| they | have been happening upon |
| we | have been happening upon |
| he/she/it | has been happening upon |
| you | have been happening upon |
| I | have been happening upon |
| they | are happening upon |
| we | are happening upon |
| he/she/it | is happening upon |
| you | are happening upon |
| I | am happening upon |
| they | will have happened upon |
| we | will have happened upon |
| he/she/it | will have happened upon |
| you | will have happened upon |
| I | will have happened upon |
| they | will happen upon |
| we | will happen upon |
| he/she/it | will happen upon |
| you | will happen upon |
| I | will happen upon |
| they | had happened upon |
| we | had happened upon |
| he/she/it | had happened upon |
| you | had happened upon |
| I | had happened upon |
| they | happened upon |
| we | happened upon |
| he/she/it | happened upon |
| you | happened upon |
| I | happened upon |
| they | have happened upon |
| we | have happened upon |
| he/she/it | has happened upon |
| you | have happened upon |
| I | have happened upon |
| they | happen upon |
| we | happen upon |
| he/she/it | happens upon |
| you | happen upon |
| I | happen upon |
Subjunctive
Pluperfect Simple
Imperfect Simple
Perfect Simple
Present Simple
| they | had happened upon |
| we | had happened upon |
| he/she/it | had happened upon |
| you | had happened upon |
| I | had happened upon |
| they | happened upon |
| we | happened upon |
| he/she/it | happened upon |
| you | happened upon |
| I | happened upon |
| they | have happened upon |
| we | have happened upon |
| he/she/it | have happened upon |
| you | have happened upon |
| I | have happened upon |
| they | happen upon |
| we | happen upon |
| he/she/it | happen upon |
| you | happen upon |
| I | happen upon |
Conditional
Perfect Continuous
Present Continuous
Perfect Simple
Present Simple
| they | would have been happening upon |
| we | would have been happening upon |
| he/she/it | would have been happening upon |
| you | would have been happening upon |
| I | would have been happening upon |
| they | would be happening upon |
| we | would be happening upon |
| he/she/it | would be happening upon |
| you | would be happening upon |
| I | would be happening upon |
| they | would have happened upon |
| we | would have happened upon |
| he/she/it | would have happened upon |
| you | would have happened upon |
| I | would have happened upon |
| they | would happen upon |
| we | would happen upon |
| he/she/it | would happen upon |
| you | would happen upon |
| I | would happen upon |
Imperative
| we | Let's happen upon |
| you | happen upon |