Mac + Safari
iPhone + iPad
Google Chrome
Mozilla Firefox
Opera
Microsoft Edgepreface | 词形变化
英语 动词 preface 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 prefacing |
| we | will have been prefacing |
| he/she/it | will have been prefacing |
| you | will have been prefacing |
| I | will have been prefacing |
| they | will be prefacing |
| we | will be prefacing |
| he/she/it | will be prefacing |
| you | will be prefacing |
| I | will be prefacing |
| they | had been prefacing |
| we | had been prefacing |
| he/she/it | had been prefacing |
| you | had been prefacing |
| I | had been prefacing |
| they | were prefacing |
| we | were prefacing |
| he/she/it | was prefacing |
| you | were prefacing |
| I | was prefacing |
| they | have been prefacing |
| we | have been prefacing |
| he/she/it | has been prefacing |
| you | have been prefacing |
| I | have been prefacing |
| they | are prefacing |
| we | are prefacing |
| he/she/it | is prefacing |
| you | are prefacing |
| I | am prefacing |
| they | will have prefaced |
| we | will have prefaced |
| he/she/it | will have prefaced |
| you | will have prefaced |
| I | will have prefaced |
| they | will preface |
| we | will preface |
| he/she/it | will preface |
| you | will preface |
| I | will preface |
| they | had prefaced |
| we | had prefaced |
| he/she/it | had prefaced |
| you | had prefaced |
| I | had prefaced |
| they | prefaced |
| we | prefaced |
| he/she/it | prefaced |
| you | prefaced |
| I | prefaced |
| they | have prefaced |
| we | have prefaced |
| he/she/it | has prefaced |
| you | have prefaced |
| I | have prefaced |
| they | preface |
| we | preface |
| he/she/it | prefaces |
| you | preface |
| I | preface |
Subjunctive
Pluperfect Simple
Imperfect Simple
Perfect Simple
Present Simple
| they | had prefaced |
| we | had prefaced |
| he/she/it | had prefaced |
| you | had prefaced |
| I | had prefaced |
| they | prefaced |
| we | prefaced |
| he/she/it | prefaced |
| you | prefaced |
| I | prefaced |
| they | have prefaced |
| we | have prefaced |
| he/she/it | have prefaced |
| you | have prefaced |
| I | have prefaced |
| they | preface |
| we | preface |
| he/she/it | preface |
| you | preface |
| I | preface |
Conditional
Perfect Continuous
Present Continuous
Perfect Simple
Present Simple
| they | would have been prefacing |
| we | would have been prefacing |
| he/she/it | would have been prefacing |
| you | would have been prefacing |
| I | would have been prefacing |
| they | would be prefacing |
| we | would be prefacing |
| he/she/it | would be prefacing |
| you | would be prefacing |
| I | would be prefacing |
| they | would have prefaced |
| we | would have prefaced |
| he/she/it | would have prefaced |
| you | would have prefaced |
| I | would have prefaced |
| they | would preface |
| we | would preface |
| he/she/it | would preface |
| you | would preface |
| I | would preface |
Imperative
| we | Let's preface |
| you | preface |