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Opera
Microsoft Edgeback up | 词形变化
英语 动词 back up 在所有时态和语法形式的词形变化。
在学习英语吗？
就让 Mate 取代 Google Translate 吧！我们为使用 Mac 设备的语言学习者提供设计完善的 Mate。轻松双击，即可将英语的网站和 Netflix 字幕或任何文本翻译到 102 种语言、查看同义词、编辑短语集。马上加入 800,000 名学习者，免费试用 7 天！
在学习英语吗？
就让 Mate 取代 Google Translate 吧！我们为使用 的语言学习者提供设计完善的 Mate。轻松将英语的文本和语音翻译到 102 种语言、学习发音、编辑短语集。马上加入 800,000 名学习者吧！
在学习英语吗？
就让 Mate 取代 Google Translate 吧！我们为使用 的语言学习者提供设计完善的 Mate。轻松双击，即可将英语的网站和 Netflix 字幕翻译到 102 种语言、学习发音、编辑短语集。马上加入 800,000 名学习者吧！
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 backing up |
| we | will have been backing up |
| he/she/it | will have been backing up |
| you | will have been backing up |
| I | will have been backing up |
| they | will be backing up |
| we | will be backing up |
| he/she/it | will be backing up |
| you | will be backing up |
| I | will be backing up |
| they | had been backing up |
| we | had been backing up |
| he/she/it | had been backing up |
| you | had been backing up |
| I | had been backing up |
| they | were backing up |
| we | were backing up |
| he/she/it | was backing up |
| you | were backing up |
| I | was backing up |
| they | have been backing up |
| we | have been backing up |
| he/she/it | has been backing up |
| you | have been backing up |
| I | have been backing up |
| they | are backing up |
| we | are backing up |
| he/she/it | is backing up |
| you | are backing up |
| I | am backing up |
| they | will have backed up |
| we | will have backed up |
| he/she/it | will have backed up |
| you | will have backed up |
| I | will have backed up |
| they | will back up |
| we | will back up |
| he/she/it | will back up |
| you | will back up |
| I | will back up |
| they | had backed up |
| we | had backed up |
| he/she/it | had backed up |
| you | had backed up |
| I | had backed up |
| they | backed up |
| we | backed up |
| he/she/it | backed up |
| you | backed up |
| I | backed up |
| they | have backed up |
| we | have backed up |
| he/she/it | has backed up |
| you | have backed up |
| I | have backed up |
| they | back up |
| we | back up |
| he/she/it | backs up |
| you | back up |
| I | back up |
Subjunctive
Pluperfect Simple
Imperfect Simple
Perfect Simple
Present Simple
| they | had backed up |
| we | had backed up |
| he/she/it | had backed up |
| you | had backed up |
| I | had backed up |
| they | backed up |
| we | backed up |
| he/she/it | backed up |
| you | backed up |
| I | backed up |
| they | have backed up |
| we | have backed up |
| he/she/it | have backed up |
| you | have backed up |
| I | have backed up |
| they | back up |
| we | back up |
| he/she/it | back up |
| you | back up |
| I | back up |
Conditional
Perfect Continuous
Present Continuous
Perfect Simple
Present Simple
| they | would have been backing up |
| we | would have been backing up |
| he/she/it | would have been backing up |
| you | would have been backing up |
| I | would have been backing up |
| they | would be backing up |
| we | would be backing up |
| he/she/it | would be backing up |
| you | would be backing up |
| I | would be backing up |
| they | would have backed up |
| we | would have backed up |
| he/she/it | would have backed up |
| you | would have backed up |
| I | would have backed up |
| they | would back up |
| we | would back up |
| he/she/it | would back up |
| you | would back up |
| I | would back up |
Imperative
| we | Let's back up |
| you | back up |