| I | underachieve |
|---|---|
| you | underachieve |
| he/she/it | underachieves |
| we | underachieve |
| you | underachieve |
| they | underachieve |
| I | underachieved |
|---|---|
| you | underachieved |
| he/she/it | underachieved |
| we | underachieved |
| you | underachieved |
| they | underachieved |
| I | have | underachieved |
|---|---|---|
| you | have | underachieved |
| he/she/it | has | underachieved |
| we | have | underachieved |
| you | have | underachieved |
| they | have | underachieved |
| I | had | underachieved |
|---|---|---|
| you | had | underachieved |
| he/she/it | had | underachieved |
| we | had | underachieved |
| you | had | underachieved |
| they | had | underachieved |
无例句可用
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