I think the TV was invented before the computer为什么不用过去完成时?

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/07/09 04:26:37

I think the TV was invented before the computer为什么不用过去完成时?
电脑发明就在现在之前,电视在电脑发明之前,也就是过去的过去,为什么不用过去完成时?

过去完成时是指说话的背景在过去时间里完成的动作.而现在主句是用了现在时,并不强调在过去背景下完成的动作,所以,只用了过去时,表示这事在过去的时间发生.
再问：也就是说，一般主句即“I think”一类的在过去发生，才强调过去完成时？或者说几件事都在过去，强调顺序才用过去完成时？？
再答：如果主句说: I thought that 那么就可用过去完成时，即发生的事情正好是在说话人所处的时间有关。过去完成时语法书是这样叙述的：在过去某时之前完成的动作；或在另一动作发生之前所先完成的动作。

英语连词成句：1.caculator,invented,computer,think,the,before,i,the, What was invented before the car?为什么被动语态和过去完成时The computer was invented in 1800可以转换为The computer i think the telephone was invented before the car变否定句 1..i think the telephone was invented before the car (改为否定句) I think the calculator was invened before the computer.是什么从句 I think the car was invented( in 1885) The car was invented in 1885 为什么要用the car 而不用cars Who invented the first computer? I am ___(wonder)who invented the first computer. I have opened the computer为什么不用I had opened the computer It seemed as if the world was at an end!为什么不用过去完成时