这个句子是什么时态Last october the famers needed help with the apple harvest there were many apples on the trees 为什么这里会用 were 了

这个句子是什么时态Last october the famers needed help with the apple harvest there were many apples on the trees 为什么这里会用 were 了 昨天,我没去上海.这个句子是什么时态 Have you ever been to shanghai?这个句子是什么时态 How about going camping this saturday?这个句子是什么时态? you are late 请问这个句子是什么时态? How long have you been doing是什么时态的句子?这个时态怎样构成? 这个是什么时态的 in the last few years是什么时态 last+一段时间 是什么时态的标志? last+一段时间 是什么时态的标志?a 如何辨认句子是什么时态 at last 的句子应该用什么时态? 句子变现在完成时态 last year怎么处理? 英语句子时态问题Why did you come to China?这句话是什么时态啊,为什么要用这个时态呢? 含有these days这个时间状语时,句子的时态应该是什么 More and more people are worried about the serious air pollution 这个句子是什么时态 She have a stomachache,she should go to see a doctor.这个句子是什么时态? 谁可以帮我看看这个句子是什么时态He's often worried about it.