同义词
- past perfect
- past perfect tense
- pluperfect tense
词路径
- entity
- abstraction
- abstract entity
- group
- grouping
- collection
- aggregation
- accumulation
- assemblage
- class
- category
- family
- grammatical category
- syntactic category
- tense
- perfective
- perfective tense
- perfect
- perfect tense
- past perfect
- past perfect tense
- pluperfect
- pluperfect tense
上位词
- perfect
- perfect tense
- perfective
- perfective tense