| 单数 | 复数 |
| 动词不定式 | | |
| frown | |
| present simple | | |
| 一般现在时 | | |
| 1 | I frown | we frown |
| 2 | you frown | you frown |
| 3 | he/she/it frowns | they frown |
| past simple | | |
| frown的过去式 | | |
| 1 | I frowned | we frowned |
| 2 | you frowned | you frowned |
| 3 | he/she/it frowned | they frowned |
| future simple | | |
| 一般将来时 | | |
| 1 | I will/shall frown | we will/shall frown |
| 2 | you will/shall frown | you will/shall frown |
| 3 | he/she/it will/shall frown | they will/shall frown |
| conditional simple | | |
| 一般将来过去时 | | |
| 1 | I would frown | we would frown |
| 2 | you would frown | you would frown |
| 3 | he/she/it would frown | they would frown |
| present continuous | | |
| 现在进行时 | | |
| 1 | I am frowning | we are frowning |
| 2 | you are frowning | you are frowning |
| 3 | he/she/it is frowning | they are frowning |
| past continuous | | |
| 过去进行时 | | |
| 1 | I was frowning | we were frowning |
| 2 | you were frowning | you were frowning |
| 3 | he/she/it was frowning | they were frowning |
| future continuous | | |
| 将来进行时 | | |
| 1 | I will be frowning | we will be frowning |
| 2 | you will be frowning | you will be frowning |
| 3 | he/she/it will be frowning | they will be frowning |
| conditional continuous | | |
| 将来过去进行时 | | |
| 1 | I would be frowning | we would be frowning |
| 2 | you would be frowning | you would be frowning |
| 3 | he/she/it would be frowning | they would be frowning |
| present perfect | | |
| 现在完成时 | | |
| 1 | I have frowned | we have frowned |
| 2 | you have frowned | you have frowned |
| 3 | he/she/it has frowned | they have frowned |
| past perfect | | |
| 过去完成时 | | |
| 1 | I had frowned | we had frowned |
| 2 | you had frowned | you had frowned |
| 3 | he/she/it had frowned | they had frowned |
| future perfect | | |
| 将来完成时 | | |
| 1 | I will have frowned | we will have frowned |
| 2 | you will have frowned | you will have frowned |
| 3 | he/she/it will have frowned | they will have frowned |
| conditional perfect | | |
| 将来过去完成时 | | |
| 1 | I would have frowned | we would have frowned |
| 2 | you would have frowned | you would have frowned |
| 3 | he/she/it would have frowned | they would have frowned |
