- 2012-05-01视频 2.13 Negative Informal Commands
- 2012-05-01视频 2.12 Informal Commands
- 2012-05-01视频 2.11 Negative words
- 2012-05-01视频 2.10 The Preterit vs Imperfect
- 2012-05-01视频 2.9 Childhood
- 2012-05-01视频 2.8 Kind of Irregular Preteri
- 2012-05-01视频 2.7 Irregular Preterit
- 2012-05-01视频 2.6 The Preterit and Travels
- 2012-05-01视频 2.5 Reflexive Verbs
- 2012-05-01视频 2.4 Comparisons
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