| Simplified | 开怀 |
| Traditional | 開懷 |
| Pinyin | kai1 |
| Pinyin | kāi |
| Verb | 开怀 |
| Continuous aspect | 开怀 着 |
| Completive aspect | 开怀 了 |
| Past aspect | 开怀 过 |
| Verb | kai1 |
| Continuous aspect | kai1 zhe5 |
| Completive aspect | kai1 le5 |
| Past aspect | kai1 guo4 |
| Verb | kāi |
| Continuous aspect | kāi zhe |
| Completive aspect | kāi le |
| Past aspect | kāi guò |