We know that the English verb involves four grammatical categories, including tense, voice, mood and aspect.Aspect is the internal structure expressed by the contextualized verbs. 英語(yǔ)動(dòng)詞涉及四大語(yǔ)法范疇，包括時(shí)態(tài)，語(yǔ)態(tài)，式態(tài)，和體態(tài)。
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