这句英文是什么时态,为什么用这时态,能用别的时态吗?what time will we be arriving?

这句英文是什么时态,为什么用这时态,能用别的时态吗?what time will we be arriving? As my father was leaving the house,the policeman arrived.这句句子中从句为什么要用过去进行时态?leave不是瞬间动词吗?瞬间动词好像不能用进行时态的吧? 这句英文是什么时态He will be coming today.He will be leaving soon.是将来时吗?为什么will后面不是动词原型呢? Can you tell me what you read this book?这句英文是什么时态? she is fond of collecting stamps请问这句是什么时态?collecting为什么要用现在进行时? Where have you been hiding这句话是什么时态,为什么用这个时态,如何翻译. I haven't had time to relax 这是什么时态吗?为什么要用这个时态? 这句英文是什么时态His mother has been exerting a lot of pressure on him to change his job. the meeting lasted for three hours.这句为什么要用meet要加ing,后面为什么用for?这句话是什么时态？lasted是怎么回事？ 为什么有些句子用might,是什么时态 英语填空题 Tom____ 【bring】 an umbrella as it was raining.用括号里词的正确时态填空.正确的是had brought.为什么不能用过去时brought呢?这是一段话中的一句. In her letter,she said that she would come to England next year.请翻译此句,并解释would come 是什么时态,句子为什么用这个时态 After having taken off,the plane flew low over the city.帮我分析一下前面那句的时态好么?是什么时态?为什么要这样用? we have had been having a lot of rain recently 用的是什么时态 为什么这么用 这句中的have and had 到底是怎么用的？ He was absent on Monday.这句话是什么时态?为什么表示过去,但absent用原形不用过去式?还有 Was he absent from school last week?这句 i think they were sth这句句子的时态是什么?为什么前面用一般现在的think后面又用were 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? he said he would visit his parents the next day.1.would能不能用WILL2.此句是什么时态