杭州交通信息网电鱼用什么锂电瓶好:英语问题二道
来源：百度文库 编辑：杭州交通信息网 时间：2024/04/30 03:41:02
1 The man sitting next to me on the plane was very nervous. It was his first flight. He ____(never,fly) before.填写并说明理由
2 This traffic is terrible. We are going to be late. By the time we get to the airport, Bob'plane _____(arrive,already) and he will be wondering where we are. 为什么用will had already arrived
2 This traffic is terrible. We are going to be late. By the time we get to the airport, Bob'plane _____(arrive,already) and he will be wondering where we are. 为什么用will had already arrived
fly是不规则动词
fly－flew－flown
1。因为从未坐过飞机，所以导致现在非常紧张，也就是说“never fly"的动作对现在造成了影响，应该用现在完成时： has never flown
2. By the time... 是完成时态的常用状语
time后面的时间如果是过去的，后面的句子就用过去完成时；如果是现在的，就用现在完成时；如果是将来的，就用将来完成时。
题目中 “we get to the airport”还没有发生，是将来的，所以后句用将来完成时。
have never flied(完成时，表示到现在从来没有）
因为already只用在完成时中
1,never flied
2,has arrived already
1.had never flied 表示以前已经发生或没发生
2.will had already arrived 这里是表示一种对将来的猜测 因此用将来时态
1.此句的before 是时间副词，应用完成时，再者，前面的参照时态是一般过去时，故其前的动作应更过去，应用过去完成时：had never flown.
2.预想将完成（be th time....)，即早已到达，故用将来完成时：will have already arrived
1句HAD NEVER FLIED
2句是将来完成时