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- Since when has he been absent from school? 她从什么时候起不来上学的？
- Since when has he been missing? 他是从什么时候失踪的?
- Since when has he been your friend? 从什么时候起他成了你的朋友?
- Since when have he stud English? 他从什么时候起学英语？
- Since when has he studied English ? 他从什么时候起学英语?
- Since when has she been learning bookkeeping? 她从什么时候起学薄记的？
- Since when has this been going on? 从什么时候起事情象这样?
- 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 she been learning book keeping ? 她从什么时候起学做薄记的?
- Since when have they been living here ? 他们从什么时候起住在这里的?
- He was red-faced when they said money was missing from the office. 当他们提起办公室里掉钱时,他脸就红了。
- 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？
- Since when has he had a beard? 他从何时开始蓄起了胡子？
- Has he been trying it on again? I hope you took no notice. 他是不是又在耍花招？我希望你没搭理他。
- At no time in his life has he been braver than in that case. 他一生中从来没有像那一回那么勇敢。
- Since when have he had a car? 他从什么时候起开始有了一辆汽车?
- Since when have you monitored them? 您从什么时间开始对它们进行监测?
- How much has he been coughing? Has he any sputum? 咳得厉害吗?有痰吗?
- Since when have you stayed here ? 你从什么时候起住在这里的?
