All the pasttenses are used to refer to past time.
所有过去时态用以描述与过去有关的时间。
2
Therefore these so-called friends are only the pasttenses.
所以那些所谓的朋友只是过去式。
3
In this lesson, learners will be able to understand and use verbs in present and simple pasttenses, ask and answer questions about what happened in the past.