问一下这两句英语句子He also noticed that some houses had had no deaths.Scientists have had the theoies that rising temperatures could harm crops.我想请问一下第一句为什么连用两个had第二句什么头一个have后面又加had

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 13:43:35

问一下这两句英语句子He also noticed that some houses had had no deaths.Scientists have had the theoies that rising temperatures could harm crops.我想请问一下第一句为什么连用两个had第二句什么头一个have后面又加had
问一下这两句英语句子
He also noticed that some houses had had no deaths.
Scientists have had the theoies that rising temperatures could harm crops.
我想请问一下
第一句为什么连用两个had
第二句什么头一个have后面又加had

问一下这两句英语句子He also noticed that some houses had had no deaths.Scientists have had the theoies that rising temperatures could harm crops.我想请问一下第一句为什么连用两个had第二句什么头一个have后面又加had
第一个是过去完成时,前一个had是助动词,后一个had是动词,因为这句话是用过去式写的,所以就用过去完成时
第二个客观存在的,所以用现在完成时

这都是过去完成时,都和语境有空,通常用在叙述过去事情的文章里。
比如我写篇文章说当今科学的,就说scientists have the theories...
如果换作写文章学术1800年科学的状况,并且这个理论1800年前就有了,我就说scientists have had the theories...

问一下这两句英语句子He also noticed that some houses had had no deaths.Scientists have had the theoies that rising temperatures could harm crops.我想请问一下第一句为什么连用两个had第二句什么头一个have后面又加had 问一下我造这个英语句子对不对.In England,each person speak not only a different language,but also understand each other. 请问这两个英语句子哪个正确he not only made a promise,but also he kept ithe not only made a promise,but also kept it 能否分析一下这句句子的成分Smiling,he said he also has seven grand-children whom he'd like to see more often. 问一个句型.no sooner +倒装+than+句子.谁给细细地讲一下. 英语句子 顺便问一下x开头的单词 请翻译一下这个句子,No doubt he meant to help,but in fact he just got in the way. 英语句子改错 He also writes novels in his spare time except working as a doctor .哪里...英语句子改错 He also writes novels in his spare time except working as a doctor .哪里错了,怎么改? 英语句子合并的题目(初二题)1.He can't go home.I can't go home ,too.(用neither……nor合并成一句)2.I may know the answer.He may also know the answer.(①用either……or合并成一句②用both……and合并成一句③用no 用also造一个英语句子 请帮划分一下这个句子的句子结构,He also suggested how inventions could be used in the future to allow man to do things that were considered impossible in his own time.是英语书上的一句话,我有点不理解,请帮划分一下句 英语句子,看看是不是病句he is no matter than a loser 英语句子改错(一处)It is no doubt that he will come 英语句子 问意思的covered by ears..no any note or sheet there _______(be) no money in his pocket.he had to go hungry.答案是being.想问一下为什么. 帮忙分析一下这个英语句子的成分:Could you describe what he looks like?Could you describe what he looks like?有其实what以后,问什么有LOOK.而前面没有does呢 英语问问问问问did Tony play ball?yes tony did /no tony didn't 可以回答为 yes he did no he didn't吗? 问一个小英语问题!十万火急!Tmo goes to bed late.But he gets up( ) 根据前半句子,写出句子中某个单词相应的反义词!(麻烦帮我翻译一下哦)