The changes that have taken place in air travel during the last sixty years would haveseemed completely impossible to even the most brilliant scientists at the turn of the 19th century.怎么翻译呢,句子里的 have taken 是什么时态?

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The changes that have taken place in air travel during the last sixty years would haveseemed completely impossible to even the most brilliant scientists at the turn of the 19th century.怎么翻译呢,句子里的 have taken 是什么时态?

The changes that have taken place in air travel during the last sixty years would haveseemed completely impossible to even the most brilliant scientists at the turn of the 19th century.怎么翻译呢,句子里的 have taken 是什么时态?
The changes that have taken place in air travel during the last sixty years would have
seemed completely impossible to even the most brilliant scientists at the turn of the 19th century.
怎么翻译呢,句子里的 have taken 是什么时态?

The changes that have taken place in air travel during the last sixty years would haveseemed completely impossible to even the most brilliant scientists at the turn of the 19th century.怎么翻译呢,句子里的 have taken 是什么时态?
过去六十年在航空旅行中发生的变化,即使是19世纪初最棒的科学家好像也认为是不可能发生的.
大概就这个意思吧……我只能翻成这样了,
这里的have taken不能单独提出来,它是和would放在一起的,即would have taken,表过去将来完成时

已经

THE BRAIN THAT CHANGES ITSELF怎么样 请教一下英语定语从句连接词的问题9.Can you lend me the book ______the other day?A.about which you talked B.which you talkedC.about that you talked D.that you talked第9题为什么不能选D?that不等于about which 7.Great changes hav 求一篇英语演讲,A word that changes the world. it‘s reported that there have been great changes in that town over the years翻译 翻译：“new changes that were hard for apparatchiks at the grassroots of the party to accept” It may happen that your life changes dramatically on your ...It may happen that your life changes dramatically on your preference of one alternative over the other. 短文改错Dear jim,I was pleased to hear from you and i am written to tell you something abo...短文改错Dear jim,I was pleased to hear from you and i am written to tell you something about the changes in my school.You are right.Great changes hav 短文改错Dear jim,I was pleased to hear from you and i am written to tell you something abo...短文改错Dear jim,I was pleased to hear from you and i am written to tell you something about the changes in my school.You are right.Great changes hav 英语翻译To review the changes in our society that may affect pharmacy and identify appropriate responses You can see that great changes（）there. A take place B t ake the place 英语翻译7.4.“Fit” will mean changes in the Materials so that they are not physically interchangeable. certain factors that determine the ease with which social changes occur什么意思? some hav worried that getting access to computer at very young age undermine the health of children这句话里的get是什么用法啊, Drugs can be anything that changes the way your mind or boby works.此句的that能不能换成which. some people fear that air pollution may bring about changes in the weather around the world.怎么翻 6.The freezing point is the temperature _______ water changes into ice.A.at which B.on that Studies show that the weather really ( )the way people feel.A.changes B.are changingC.changed D.have changed the extremely influential idea that the very act of being experimented upon changes subjects’ behathe extremely influential idea that the very act of being experimented upon changes subjects’ behaviour.这句话我对照翻译看不懂求解释