第一题时态是had还是has还是is having 为什么

第一题时态是had还是has还是is having 为什么 Where is her second son?I haven't seen him for a long time.He __Maine looking for a place to work这题时态填has gone to呢还是had gone to?我也认为是现在完成时，但答案却是had gone to ,这还是一道中考题，难道是答案错 高一英语第一题跪求解析,用has 还是had this is the second time that ...是跟完成时态还是过去时态,还是具体分析? Did his father had(has) lunch in his factory?是用had 还是 has? 英语时态题I got caught in the rain and my suit----,后面用has been ruined还是had been ruined 请问这个句子是什么时态?He is an absolute idiot--he should have acccepted the offer immediately.在这里,he should have acccepted the offer是现在完成还是过去完成?如果不是那个情态动词,have应该是had还是has? 现在完成时是现在时态还是过去时态 英语时态中,过去完成时和现在完成时有区别是什么?事情发生在过去的过去,使用过去完成还是现在完成?嗯.比如when I arrived at the playground,the game___.是用has started还是had started? she's just had a wine.中的's指什么是is还是has?老师说是is Tonny told his teacher that he（ ）born in 1992.A was B had been C is D has beenin 1992不是具体的时间么?为什么还是要用was?另外什么时候谓语动词时态不变? 英语中过去完成时是have还是had?它是怎样构成的?还有哪些时态?请举例! It 是has还是have还是had got a panda on it has had done的时态?David has had done to the website.这是教材原文. the astronauts__what he has seen in space.时态是现在时还是其它？ 英语语法题(82)-动词的时态和语态 P146 No.8Shirley_____a book about China last year but I don't know whether fshe has finished it.A.has written B.wrote C.had written D.was writing write 的现在分词形式是writting 还是writing?答案 Why is your brother crying hard,Linda?He _____his favorite cartoon,he has to wait for tomorrow'sprogram.是填 missed misses had missed 还是is missing 英语当中“不得不做某事”的表达只是had to 还是 have to has to 也可以 我一直高不清楚 有人称和时态的变化吗