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- Since when has she taught here? 她从什么时候开始在这儿教书的?
- Since when has she been learning bookkeeping? 她从什么时候起学薄记的？
- Since when has she been learning book keeping ? 她从什么时候起学做薄记的?
- Since when has he been absent from school? 她从什么时候起不来上学的？
- Since when have they been living here ? 他们从什么时候起住在这里的?
- Since when have you stayed here ? 你从什么时候起住在这里的?
- Since when has this been going on? 从什么时候起事情象这样?
- Since when have he stud English? 他从什么时候起学英语？
- Since when have you been feeling like this? 你从什么时候开始有这种感觉的？
- Since when has he been your friend? 从什么时候起他成了你的朋友?
- Since when has he studied English ? 他从什么时候起学英语?
- Since when have you monitored them? 您从什么时间开始对它们进行监测?
- Since when have you been feeling like this ? 你从什么时候开始有这种感觉的?
- Since when have you been so stingy? 你是什么时候变得这样小气的？
- Decades, the Big-Habitat for UNIFEM, since when has to. 十年之中，使卿居富得妇，自当还去。
- I'm under contract to teach here for one year. 我按照聘约要在这里教一年书。
- Since when have you been here? 你从何时起就在这个地方的？
- Since when have terrorists and tyrants announced their intentions, politely putting us on notice before they strike? 试问恐怖主义分子和暴君从何时起宣布过他们的图谋，在动手之前彬彬有礼地向我们发出通知？
- She taught herself the techniques of narrative and dialogue. 她自学了叙事和对话的技巧。
- I have taught here for fifteen years. 我在这儿已经教了十五年。
